I worked in a foundry and we had an OSHA audit. They wrote us up for not having ground prongs on the grinders. No amount of explanation about double insulation could persuade those assholes. We lopped off all the cord and installed 3 prong plugs. Of course there is no ground conductor so that 3rd prong doesn't do a fucking thing. Tax dollars hard at work... Excellent video Sir.
I worked in the USAF and replacing our own plugs vs. ordering the cord assy. was verboten. More cords for me. In the parent case the OSHA inspector was a tard. You can ask OSHA for official written opinions with citations if you get a moron inspector.
I worked for a Japanese manufacturer for many years. The level of detail spent on evolving the engineering was crazy. Every in house engineer working in the field could feed back any comment by any channel they liked to the factory. Everything from 'this part fails most' to 'the shipping packing on this part is annoying to remove' found it's way back. The nice bit is you would see the changes coming through within months, sometimes weeks. I even saw a motor casing get re-tooled because one screw on the mount was 'a bit tricky to get to'.
Makita makes good tools. I used their stick 9v screw gun completely submerged for several hours a day for weeks (doing underwater rigging vfx on a movie) -It lasted another 10'years.
Makita reigns supreme here in Brasil, it became a slang among contractors for any disc cutting power tool, because its the only real quality brand available on sale here
Gotta tell you why I love these videos. I spent over 20 years in the Marines and not in any type of manufacturing fields. I am learning at an exponential rate with these videos. Not to mention that, like the Marines, this guy has a language that is only part English. His commentary is filled with so many purposely butchered words that they alone are worth the view. Thank you for the useful knowledge and colorful trip through the inner workings of every tool that I own.
Great world to live in for people who know how to fix stuff, isn't it? One time a guy put a RUNNING lawn mower out on the curb. One man's trash... Still have that mower, still running like a top. Only problem is you've gotta short out the spark plug to stop the thing. Can get interesting if you have to do that in the rain.
Broken cord, broken trigger (you can get those for dead cheap if you happen to have a parts market around you), best one i ever found, the guy lost the locator washer, yup. Dumb people are gold for people like us.
Same here re free curb lawnmower, Craftsman, used it for 10 years...just about had a coronary pulling the rope 20+ times every time I wanted to start it, but price was right.
jusb1066 That's what I was doing, but sometimes my foot would slip off of the springy strip and touch the bare end of the spark plug. This is quickly followed by a series of shocks to my foot, much cursing, and occasionally wondering why I don't just wire in a switch to ground out the wire between the points and the ignition coil.
My dad used to keep everyone he knew supplied with TV's by 'shopping' on garbage days. Eventually they stopped being repairable and now we have to buy them.
Ave: When you strip the tool shell of of the electro-mechanicals is a good time to put the filthy plastimicated bits through the dish washer machine. Stuff comes out looking almost as good as new. And the spouse can't complain if you put her toys through the rinse cycle at the same time.
I agree but I've heard uncle bumblefuck say that he feels it's a waste of time because it just get dirty again. I have the luxury of time, and the phrase while I was in there has cost me quite a bit of it. But I like my tools to look well cared for, I think I will treat a tool better if it's been well cared for,and I think others will too.
I use these Makita 5” grinders doing pipeline work and they’re definitely my favorite. Even keep working after having a stick of 12” steel pipe dropped on them haha
I just wanted to say that you are the best tool review guy I ever watched , I like that you take them all apart and kretic about material and how they are made.
Yea, the thing is: he could easily edited that out of the video, but he didn't. he shows his mistakes so we don't have to do the same, or in this case really just so we'd have a laugh at his expense. cool dude this AvE:)
when my truck got stolen and recovered, the nice fella left me a dewalt grinder with that exact failure you're talking about, wore out the cutoff wheel he was using to steal other stuff and can't get it off. now i have a paperweight. get what you pay for i guess.
Never trust the work that came before you: Maybe it's the cord. *fixes cord* Still doesn't work. Hmm... maybe it's the cord. *fixes cord* Doesn't start. Must be the cord. [....]
nice to see an older tool with its life back. I still have my dad's old belt sander. it's 4 X 21 3/4. don't see those belts common anymore. yes it weighs about 15 pounds
My dad owns a old as fuck Makita electric chainsaw he brought a few years ago on a garage sale, it keeps on going, cutting through thick trees like no other! I love old stuff.
Recently bought a Makita GA5021c as my first grinder. It's not much different from this 5010. Very happy with my purchase. My model doesn't have a stay-on switch and it has a slightly different trigger. I cracked it open and followed along with this BOLTR. Thanks for AvE.
PA = polyamide GF = glass fiber 30 = 30%. Nylon is a generic name for aliphatic polyamides. It is important to mention however that though all nylons are polyamides, not all polyamides are nylons.
As a Makita facto service center technician. I work on and repair all sorts of Makita tools. Cool to see someone really explaining in depth about these tools.
I have the home gamer Makita grinder, and for the past 3 years it will be grinding for a good 3 or 4 hours a couple nights a week. I have replaced the brushes a few times, and it still runs great.
I have a buddy that was a tool repairman until that trade officially died about 6 years ago. He has 2 of every damn kind of tool from just about every manufacturer and almost all of them were "too expensive to repair" based on stupid things like what AvE saw here, like bad power cords, switches, a roached bearing, etc, etc. His power tool library would probably cost about $20k and he got it all for free from the junk pile. It's amazing what people will just throw out. Even paying a union electrician $50 an hour it would have been cheaper to repair that grinder than buy a new one. The terrifying part is that someone tried, and failed, to repair an obviously damaged power cord and just shit canned it anyhow. "Ain't my job!!"
The same way that vanes in front of a fan direct the airflow in the most useful direction, the laminations direct the current and fields in the most useful direction. It is as simple as that. Love your videos.
Dear Mr. I've worked a couple of years with a machine with the brand name "Flex". Hell of a machine, never one problem, very proffesional machine. Do you no the brand? Just an idea for a video?
I love this channel. You learn about tools, have a good laugh and usually gain some sort of life tip on the side. I now know why my dad's Makita tools last so long, they don't fuck around with quality. Every Makita tool we own has only required a new power cord or brushes. Each is a joy to own and use, some going 20 years strong. Their motors are always more powerful than you would expect for their size, and they run with less vibration than other makes. We just bought a small 2.5 hp Makita router from a plumber who used it for counters and the brushes looked hardly used. The outside looks like it was thrown around in a tool box, but besides that it must have only a few dozen hours on it. Steal of a deal as we got it for half price due to the battle worn exterior.
problem with Makita was when they moved the factory to china, my old made in Japan 80's Makita is so much better than todays poop never knew they made in the usa, possibly for the american / mexican market only
yep, my shop buys these and similar models, they are tanks with sometimes 3 brush changes. I've been using a smaller Bosch Model 1375A, at work two years and still going strong.
Would you check the rotation of the gear with the three lock pin pockets? I'm thinking that those ramps might be designed to prevent the lock being engaged at a too fast a speed. If the lock button is pressed the ramp launches the pin away from the lock hole until the speed goes down. Nice job Makita. First build it bullet proof, then don't let the user shoot at it to begin with!
The ramps on the gear are to get the lock pin to jump the gap when someone gets silly and presses the button while it is running. I once had a new coworker call it the shocker button. I was worried the tool was malfunctioning and shocking him. Nope, just like a large hand buzzer toy he was playing with the lock button while he was sanding. As always, thanks for the thorough review and showing off the inside parts of the tools we all love and respect.
***** im doing pretty good. :D and no i live in illinois, im just an hours drive from missouri though so its basicly the same place. just Missouri has hills and cool minerals instead of flat and just coal. lol although im currently still stuck in California, that'll change soon though. moving truck comes the day after tomorrow. :)
***** thanks! i plan to work on a better one using the nichrome wire you gave me forever ago. and i might play around with the arc furnace project again :P
Shop I worked in had these almost exclusively and they didn't kill them very often and they ran 40+ hours a week, Usually just new brushes and cord repairs was all that was needed to keep them going. Held onto one of these just long enough to decide that grabbing gears was easier than becoming a welder.
Makita grinders are the BEST I've ever owned. No other POS grinders come close to the reliability, durability, and quality. Sure, you're going to pay a bit more, but is well worth it.
Have both, no complaints about either. The bosch was twice as expansive as the makita, but it is skookum as frig. I use it to push my Kutzall Extreem Carbide blade for power carving, the bosch is the power of two horses in your hand (13 amp grinder). That said, I have no complaints about my makita grinders, had them for years, they are still skookum choochers.
Been welding for a living for the last 20 years , I wont use anything but a Makita grinder , I have had to in a pinch use other brands , they just don't last. I usually use the Makita 4-1/2 inch grinders , and most often one of three things goes wrong with them , the cord freys , the brushes wear out , and the switch goes bad , but most of the time it's the cord. I have played hell finding replacement brushes locally same day , and usually don't have time to order them , so I cough up the bucks and go buy a new one. I did discover a happy accident , the brushes in the chepo $20 dollar Harbor Freight grinder will work , the same ones with the removable disc on the sides , they just need to be filed down a bit to fit.
+AvE I haven't changed the disc yet and have used it several times without any issues at all. Cramming some good molybdenum lube in the gearbox is probably helping things out, probably more than I'll ever truly know lol. I'll see how changing the disc goes when I pick some up. Can you recommend some good reliable cutting and grinding discs?
+AvE I'll take a look in my area and see if anyone carries em. The amazonian has someone selling them for 2.15 a piece plus 15 for shipping, not quite the bargoon I was looking for haha. Thanks for the advice man, love the videos.
"Never trust the work that came before you even if you did that work because there is no easier person to fool than yourself" Words of wisdom, AVE, words of wisdom right there.
Got mine for a dozen pesos to cut a bent lower control arm out. The locking button and spring mechanism broke on the first day. Wasn't worth the fuel going to return it. Still chooches, but definitely not for professional use.
I have two black & decker wildcat 9" angle grinders from the '70s that my dad owned. They still chooch just fine and are complete beasts. I have the scars to prove it. Cheers.
Have three newer models I got from work for free that were broken and they changed the ring gear a little it now has a metal washer for the lock up and the gear is power now not forged
I believe they were 4.5" with the electric brake function but I ended up putting bigger guards on Internals looked the same but the switch was different I think the switch controlls the brake function
Have a 7" Makita side grinder that's been used for building woodburning stoves to oil rigs. Can't imagine what I have NOT used it for. It's over 30 years old and I've only had to replace the brushes (which were soooo easy to get to. Will have to replace the cord as slinging it around by same over the years has worn havoc..Great program. Leave it on even when I'm not watching to hear you go on and on..hypnotic..
That is a beautiful thing! Though I gotta ask: Am I the only one that takes apart new power tools the second they come out of the box, and re-greases the gears with a high-quality high-pressure grease? :D
I did it on my dewalt dw831 after watching the boltr done on one. As soon as I got it from Amazon I opened it up, cleaned it out and put in the good stuff.
I sometimes re-grease, and another good idea is to run brushed motors like these on reduced voltage for a couple hours to seat the brushes, 12v DC usually works OK for 120v AC universal motors. If it has a triac speed control you may have to bypass that. Have done it to everything from kitchen appliances to vacuum cleaners to these tools.
my dads been a welder and engineer in the same company since leaving collage till the day he retired, he loves your vids. apart from the colloquialisms he's just like you.
The epoxy coating around the commutator tangs is called gel banding. It's used to prevent fatigue failures of the copper fusing at the tangs when there is either very high speed involved or radial flexing of the main shaft.
+AvE those are really good. I also have a dewilt 5/6" and love them. I have had the 1 for 3 years... I'm a pipeline welder so they get used 6 days a week the problem I had with 1 was the cord caught fire in the handle but replaced it and 2 years later still good. I have an ac 7" Makita grinder that works great on my sa200 as well (dc only machine)
After the apocalypse i will be climbing over the huge piles of Dewilt products with my Makita grinder gripped in my mechanical hand, witch i made myself, and face the zombie hoard with all the other Makita owners!
Yeah i have seen it when i was in the store lol its like a 4 inch wheel i have always wondered if it was any good .it would probably get saw dust in side of it
Hi AvE, Just found this vid due to my own blues with my Makita GA9000. The bearing you referred to as 608 at the end of the commutator (close to the power switch) on my grinder got so hot and burned the end of the fields wires including those ring wires... At disassembly the bearing disintegrated totally and all I could find on the floor was 4 bearing balls and a bearing side cover. The centre part of the bearing is still on the commutator and it is a bit of a challenge to remove :D Thanx for an awesome informative vid.
I have the smaller Makita grinder from 1995-ish. I got it so hot the fan melted and started rattling around. I was in the field and had to get the job done so I opened her up and pulled the fan off. I still use it today. I always intend to only use it for short light jobs, but frequently get it so hot I can't hold it so I put on the welding gloves. The detent on the switch is toast so I have to hold it, but the damn thing won't die so it still gets occasional use. I'll use it till it stops.
I've had a DeWilt 4 1/2" for years, always had a nasty rattle to it but held strong. Got a couple spent Hazard Fraughts given to me after 6 months use, brushes were completely spent. Then got a Metabo 5" gifted to me after 2 yrs use, had a cut in the cord insulation and could no longer be used "safely" thanks to the clipboard warriors. It is a BEAST. No rattle, pure torque machine.
afroninjadeluxe It wasn't in a vacuum, but the neodymium magnet was a sphere shaped one about 9-10mm across. Essentially, the only thing touching the sphere as it accelerated was air, and a sphere is pretty aerodynamic. Hall effect sensors and optical sensors provide feedback on position and it hold it in place like one of those floating globes. That's commonly referred to as a magnetic bearing. All it needs to do then is start shifting the field so it rotates, while still keeping it afloat, and you have acceleration. In my configuration there's no speed limit, just the magnet providing feedback to the rotating field generator, so it goes as fast as it feels like. I measured the AC frequency at about 2kHz, and as the power draw dropped off significantly a few seconds after reaching said speed, it was safe to assume the magnet wasn't lagging the field much. And trust me, I stood well back and used a computer and cheap webcam to observe the thing from the other room. If the sphere flys off, well that's pretty much gonna leave a mark on what it hits.
I am a huge makita fan nice to see you finally doing a tear down on one and showing there good. Please please please please do a tear down on a newer drill just to see if there still as good.
love makita tools. held on to a makita grinder for about a year and a half never broke down. literally 10 hours a day grinding granite. just awesome. would love to see the sjs grinder system.
Like some have suggested, honestly. Do a HF angle grinder. Lets how how bad (or not?) they REALLY are! I ain't gonna break into mama's christmas money that's for darn sure!
I made the mistake of buying a King brand grinder for a project a while back. This is a brand i would equate with HF brand. It lasted less then 25 min before it seized (bearing) and started smoking. Because i owned other (proper) grinders for work and i just needed one for odd home projects i decided to replace it with the Ryobi rat tail (a brand i would generally avoid at all costs)and have been pleasantly surprised with it especially given the price point. The ergonomics, the adjustable handle that i originally thought was gimmicky has actually been useful, reasonably powered and it probably saw 30hrs of grinding in it's first week of life. Couple years later and still kicking, though lightly used since.
I got a lot of cheap grinders. (15$ each) I almost never change disks, because I have one for each type. And I go easy on them. A coulpe of them I've had for years and they still work. the lock is a Joke but since I don't have to change disks all the time its ok. Also had one I bought just to do one job, and ofc it failed within 10 minutes, actually caught fire and tripped the breaker. that was a 50$ tool, Hyundai brand, so you know one not to buy.
+Tristan Peoples You can say what you want about CT Mastercraft tools, but I have yet to have one fail me. I have a variety of their stuff because when it comes on sale, it can't be beat by the other more name brand stuff. Granted, I don't make my living off my tools, so I may have a different opinion them. I've got a grinder, drill press, plunge/fixed base router kit, super cheap table saw, and sliding compound miter saw. The table saw is lightweight, so the base is pretty flimsy, but I've ripped boards, plywood and MDF with it. Probably all on the same blade. My only complaints are that it's not big enough and that the fence has a terrible lock. But on sale and with my mittful of Canadian Tire pesos, I think I spent ninety bucks on it. The miter saw cuts spot on once you tweak the laser, but my good Lord it's a noisy cork soaker. Makes me wonder if there's any grease in it. The router is exactly the same as a Craftsman. Right down to the casting and moulding. I'm guessing most of this stuff is made in the same factories. Now, their Jobmate brand...that's on par with the Power Fist crap.
From Buford Ga myself. That Makita factory is still in business and as enigmatic as ever. Never met an employ from there and they must all run to and from their cars since no one is ever seen coming or going.....
Doood man. I can't thank you enough for all your Vajios. They are always a laugh with a ton of learning. If you did Ted talks that would be TH-cam gold. Thanks again man.
I have had my chiquita over 25 years, got 2 out of a scrap bin. Made one out of the two. I use it often. One set of brushes. My young shop helper is now hooks on your vijeos too. Peace....
You gave a good simple description of eddy current losses and hysteresis losses, but they are two different things. You seemed to equate them or use them interchangeably even though you properly explained them.
Hey AvE, I'd love to see you cover Makita's new generation of grinders -- like the Ga5042. Just bought one myself because i was hoping its built as well as their older tools. Its got some fancy dancy electric features like speed control and soft start, so id like to see if they kept up the same quality, or if they cheapened out. Thanks!
Its a acoustic magnetic tag. The tag vibrates and reflects a specific pattern via a specific magnetic waveform. The sensormatic tags are much more reliable then the checkpoint tags. The tag is not perfectly flat to allow a metal strip inside the tag to vibrate.
I became a die-hard Makita fan when I was working maintenance at a custom circuit board factory. I used and abused a grinder and a cordless drill trying to keep the old building from falling apart and the Makitas just kept on rolling when the other stuff they had would crap the bed. I've always kept Makitas in the home shop ever since.
Can tell you love the Makita grinders...they are awesome. I picked me up an almost free.99 tool...a 6-inch metabo grinder for $2.50. Skookum as frig after I fixed the sticky trigger!
Fun fact. The gear drive for a 7.3 powerstroke High Pressure Oil Pump is held in place the exact same way the pinion gear is on this grinder. One bolt, torqued to 95ft lbs holds the gear to the pump. Pretty Shweet. But if you don’t get her torqued down enough when the engine gets hot resulting in slippage.
Honestly wish that they would lighten the trigger pull on them thou, I can grind overhead all day and my finger is the first thing to get tired. Feels like its gotta be a 15 pound trigger pull, same with the hammer drills, just brutal
Not to beat a dead horse. Hysteresis was demonstrated at 6:26. It's the movement of the switch between the on and off state. In this region, the output can be on or off depending on its previous state.
Love Makita they in my opinion they are the best for there price my dad gave me a bunch of Makita electric tools they are 50 years old and still run amazing
Used to detail cars for a living when I was younger and I got pretty serious about the tools of the trade. Can confirm, Makita makes one hell of a good buffer, and I reckon it's only about 20% different parts to this grinder. To get a better rotary buffer than the Makita, you've got to spend at least twice as much.
Man, I've got a Makita corded drill that's 25 years old, 3/8ths chuck, it's still going. Granted I don't put that many hours on it but my brother polished two cars with it, I don't know how many hours that took but that would have killed a lesser tool right there. It's still going, hole saws, drywall screws, it's done it all and just keeps going.
I’ve beat on makita grinders in welding shops for over 10 years and they don’t quit , ever . I’ve run them in the rain , dirt, grime and dropped them lots and they keep running
![[#2024MAMA] ROSÉ (로제), Bruno Mars - APT. | Mnet 241122 방송](http://i.ytimg.com/vi/dgGqD28J6aQ/mqdefault.jpg)
I worked in a foundry and we had an OSHA audit. They wrote us up for not having ground prongs on the grinders. No amount of explanation about double insulation could persuade those assholes. We lopped off all the cord and installed 3 prong plugs. Of course there is no ground conductor so that 3rd prong doesn't do a fucking thing. Tax dollars hard at work...
Excellent video Sir.
Clipboard tards. Probably couldn't think of something better to find.
I worked in the USAF and replacing our own plugs vs. ordering the cord assy. was verboten. More cords for me. In the parent case the OSHA inspector was a tard. You can ask OSHA for official written opinions with citations if you get a moron inspector.
Hey watch wes work whats up
Buddy
I worked for a Japanese manufacturer for many years. The level of detail spent on evolving the engineering was crazy. Every in house engineer working in the field could feed back any comment by any channel they liked to the factory. Everything from 'this part fails most' to 'the shipping packing on this part is annoying to remove' found it's way back. The nice bit is you would see the changes coming through within months, sometimes weeks. I even saw a motor casing get re-tooled because one screw on the mount was 'a bit tricky to get to'.
I am an mech eng and I wouldn't mind doing that as I do that kind of stuff already lol
The Japanese take their work incredibly seriously. Striving for perfection is ingrained into their culture.
hello from Buford,GA. and yes makita is still in town!
Update?
Did they know each other or not? Can't leave us hanging..
Lmao. We moved out of the area a little over a year ago. But I'm not sure if I know the original replier
Noooo!!!
@@gokblok t=r=rrrr[=f[tttyt=2vg-gt[egg&-&r[t[t[&&gg_&get[[===_r|e⁰}
These grinders may not be the "best", but they sure as hell are consistent -- which is sometimes the most important thing.
Makita makes good tools. I used their stick 9v screw gun completely submerged for several hours a day for weeks (doing underwater rigging vfx on a movie) -It lasted another 10'years.
Makita reigns supreme here in Brasil, it became a slang among contractors for any disc cutting power tool, because its the only real quality brand available on sale here
Gotta tell you why I love these videos. I spent over 20 years in the Marines and not in any type of manufacturing fields. I am learning at an exponential rate with these videos. Not to mention that, like the Marines, this guy has a language that is only part English. His commentary is filled with so many purposely butchered words that they alone are worth the view. Thank you for the useful knowledge and colorful trip through the inner workings of every tool that I own.
Broken cord=Free tool. Gotta love the world we live in now.
Great world to live in for people who know how to fix stuff, isn't it?
One time a guy put a RUNNING lawn mower out on the curb. One man's trash...
Still have that mower, still running like a top. Only problem is you've gotta short out the spark plug to stop the thing. Can get interesting if you have to do that in the rain.
Broken cord, broken trigger (you can get those for dead cheap if you happen to have a parts market around you), best one i ever found, the guy lost the locator washer, yup. Dumb people are gold for people like us.
Same here re free curb lawnmower, Craftsman, used it for 10 years...just about had a coronary pulling the rope 20+ times every time I wanted to start it, but price was right.
jusb1066
That's what I was doing, but sometimes my foot would slip off of the springy strip and touch the bare end of the spark plug.
This is quickly followed by a series of shocks to my foot, much cursing, and occasionally wondering why I don't just wire in a switch to ground out the wire between the points and the ignition coil.
My dad used to keep everyone he knew supplied with TV's by 'shopping' on garbage days. Eventually they stopped being repairable and now we have to buy them.
Pretty awesome grinder. Always on the lookout for used ones.
Ave:
When you strip the tool shell of of the electro-mechanicals is a good time to put the filthy plastimicated bits through the dish washer machine. Stuff comes out looking almost as good as new. And the spouse can't complain if you put her toys through the rinse cycle at the same time.
I agree but I've heard uncle bumblefuck say that he feels it's a waste of time because it just get dirty again.
I have the luxury of time, and the phrase while I was in there has cost me quite a bit of it. But I like my tools to look well cared for, I think I will treat a tool better if it's been well cared for,and I think others will too.
I use these Makita 5” grinders doing pipeline work and they’re definitely my favorite. Even keep working after having a stick of 12” steel pipe dropped on them haha
There is no person easier to fool than yourself, dropping some mad wisdom there
Quoting the venerealable Richard P. Feynman - because Ave is embarrassingly well-red (...embarrassing for the rest of us mere mortals, that is).
I just wanted to say that you are the best tool review guy I ever watched , I like that you take them all apart and kretic about material and how they are made.
Did you test the dead end of the cable you just cut off? Hahaha dingus.
If women don't find you handsome they should at least find you handy. My guess is AVE is the Canadian equivalent to Brad Pitt.
Hey man, multitasking is hard.
Better to make a dumb mistake than to have to spend a half-hour chasing pixie leaks inside the can...
Some still changed for there mistakes..
Yea, the thing is: he could easily edited that out of the video, but he didn't. he shows his mistakes so we don't have to do the same, or in this case really just so we'd have a laugh at his expense. cool dude this AvE:)
when my truck got stolen and recovered, the nice fella left me a dewalt grinder with that exact failure you're talking about, wore out the cutoff wheel he was using to steal other stuff and can't get it off. now i have a paperweight. get what you pay for i guess.
People only throw tools away because they don’t know how to trouble shoot and fix things. I have learned a ton from this channel. Thanks man
Never trust the work that came before you:
Maybe it's the cord.
*fixes cord*
Still doesn't work. Hmm... maybe it's the cord.
*fixes cord*
Doesn't start. Must be the cord.
[....]
**This is not a recursive step in the troubleshooting procedure**
You forgot to show the wobbly bit that locks the head
i wanted to see how bad It was..
14:29
DH, AvE suggested it was probably the pokey bit, not the pokey bit -receptacles
Yeah, I wanted to see how the pokey bit had failed.
nice to see an older tool with its life back. I still have my dad's old belt sander.
it's 4 X 21 3/4. don't see those belts common anymore. yes it weighs about 15 pounds
It's great to see an older tool with its life back. Isn't Viagra wonderful.
An old tool checking out an old tool :P
If I lost about 20-30lbs I could probably see an old tool again and maybe get some life back into it as well :)
My dad owns a old as fuck Makita electric chainsaw he brought a few years ago on a garage sale, it keeps on going, cutting through thick trees like no other!
I love old stuff.
you said old tool
don"t worry i'm a chisel
Recently bought a Makita GA5021c as my first grinder. It's not much different from this 5010. Very happy with my purchase. My model doesn't have a stay-on switch and it has a slightly different trigger. I cracked it open and followed along with this BOLTR.
Thanks for AvE.
You should make a video about the code designations of plastics. like what part of the code told you that it was nylon reinforced
PA = polyamide GF = glass fiber 30 = 30%. Nylon is a generic name for aliphatic polyamides. It is important to mention however that though all nylons are polyamides, not all polyamides are nylons.
What would then be abs-pa/sebs (in layman's terms)?
+VictorIndiaDeltaAlfa abs = acrylonitrile butadiene styrene. Pa = polyamide. Sebs = styrene ethylene butadiene styrene.
Pungo Machungie Ok, can you describe any advantages or disadvantages versus PA-GF? Bosch uses this on their tools, that's why I'm curious.
+VictorIndiaDeltaAlfa sebs allows abs to be blended with pa. So abs-pa/sebs is a blend of abs and pa with sebs as a compatibilizer
As a Makita facto service center technician. I work on and repair all sorts of Makita tools. Cool to see someone really explaining in depth about these tools.
"It can't be the cord I just fixed it" for me it's, "it must be the cord I just fixed it"
Always check if the problem is you first in any troubleshooting excercise.
I have the home gamer Makita grinder, and for the past 3 years it will be grinding for a good 3 or 4 hours a couple nights a week. I have replaced the brushes a few times, and it still runs great.
I'm a simple man. I see a new AvE video? I click the thumbs up.
Yes, you are correct. There's a Makita factory in Buford, GA at the intersection of Thompson Mill Rd. and Buford Hwy.
I have a buddy that was a tool repairman until that trade officially died about 6 years ago. He has 2 of every damn kind of tool from just about every manufacturer and almost all of them were "too expensive to repair" based on stupid things like what AvE saw here, like bad power cords, switches, a roached bearing, etc, etc. His power tool library would probably cost about $20k and he got it all for free from the junk pile.
It's amazing what people will just throw out. Even paying a union electrician $50 an hour it would have been cheaper to repair that grinder than buy a new one. The terrifying part is that someone tried, and failed, to repair an obviously damaged power cord and just shit canned it anyhow. "Ain't my job!!"
Ain't my job. Fucking there is the pussy right there.
The same way that vanes in front of a fan direct the airflow in the most useful direction, the laminations direct the current and fields in the most useful direction. It is as simple as that.
Love your videos.
Dear Mr. I've worked a couple of years with a machine with the brand name "Flex". Hell of a machine, never one problem, very proffesional machine. Do you no the brand? Just an idea for a video?
I love this channel. You learn about tools, have a good laugh and usually gain some sort of life tip on the side.
I now know why my dad's Makita tools last so long, they don't fuck around with quality. Every Makita tool we own has only required a new power cord or brushes. Each is a joy to own and use, some going 20 years strong. Their motors are always more powerful than you would expect for their size, and they run with less vibration than other makes.
We just bought a small 2.5 hp Makita router from a plumber who used it for counters and the brushes looked hardly used. The outside looks like it was thrown around in a tool box, but besides that it must have only a few dozen hours on it. Steal of a deal as we got it for half price due to the battle worn exterior.
problem with Makita was when they moved the factory to china, my old made in Japan 80's Makita is so much better than todays poop
never knew they made in the usa, possibly for the american / mexican market only
yep, my shop buys these and similar models, they are tanks with sometimes 3 brush changes.
I've been using a smaller Bosch Model 1375A, at work two years and still going strong.
Would you check the rotation of the gear with the three lock pin pockets? I'm thinking that those ramps might be designed to prevent the lock being engaged at a too fast a speed. If the lock button is pressed the ramp launches the pin away from the lock hole until the speed goes down. Nice job Makita. First build it bullet proof, then don't let the user shoot at it to begin with!
Bill Lewis
The ramps on the gear are to get the lock pin to jump the gap when someone gets silly and presses the button while it is running. I once had a new coworker call it the shocker button. I was worried the tool was malfunctioning and shocking him. Nope, just like a large hand buzzer toy he was playing with the lock button while he was sanding. As always, thanks for the thorough review and showing off the inside parts of the tools we all love and respect.
11:21 that makes total sense now that ya say that. thanks!
***** im doing pretty good. :D
and no i live in illinois, im just an hours drive from missouri though so its basicly the same place. just Missouri has hills and cool minerals instead of flat and just coal. lol
although im currently still stuck in California, that'll change soon though. moving truck comes the day after tomorrow. :)
*****
thanks! i plan to work on a better one using the nichrome wire you gave me forever ago. and i might play around with the arc furnace project again :P
Shop I worked in had these almost exclusively and they didn't kill them very often and they ran 40+ hours a week, Usually just new brushes and cord repairs was all that was needed to keep them going. Held onto one of these just long enough to decide that grabbing gears was easier than becoming a welder.
Makita grinders are the BEST I've ever owned. No other POS grinders come close to the reliability, durability, and quality. Sure, you're going to pay a bit more, but is well worth it.
tried Bosch? That's what MichaelChtulu (giant sword fabricator here on the you-tubes) uses. They seem to be pretty damn skookum
+Sean Hartford makita master race
Have both, no complaints about either. The bosch was twice as expansive as the makita, but it is skookum as frig. I use it to push my Kutzall Extreem Carbide blade for power carving, the bosch is the power of two horses in your hand (13 amp grinder). That said, I have no complaints about my makita grinders, had them for years, they are still skookum choochers.
Been welding for a living for the last 20 years , I wont use anything but a Makita grinder , I have had to in a pinch use other brands , they just don't last.
I usually use the Makita 4-1/2 inch grinders , and most often one of three things goes wrong with them , the cord freys , the brushes wear out , and the switch goes bad , but most of the time it's the cord.
I have played hell finding replacement brushes locally same day , and usually don't have time to order them , so I cough up the bucks and go buy a new one.
I did discover a happy accident , the brushes in the chepo $20 dollar Harbor Freight grinder will work , the same ones with the removable disc on the sides , they just need to be filed down a bit to fit.
I ended up buying that supposed makita killer because of the review you did on it lol.
+AvE I haven't changed the disc yet and have used it several times without any issues at all. Cramming some good molybdenum lube in the gearbox is probably helping things out, probably more than I'll ever truly know lol. I'll see how changing the disc goes when I pick some up. Can you recommend some good reliable cutting and grinding discs?
+AvE I'll take a look in my area and see if anyone carries em. The amazonian has someone selling them for 2.15 a piece plus 15 for shipping, not quite the bargoon I was looking for haha. Thanks for the advice man, love the videos.
+AvE if you ever find yourself working in the glory hole of Canada (Ontario) I'd love to have a laugh with you in person haha.
Nah, I got a dewilt. I have put it through absolute hell and even left it out in the rain, and it still grinds down my horrible welds with ease
Lol the last part.
I swear BOLTR and AvE gives me hope for youtube.
18:02
my man ha
So did he find the rough spots?
A schematic and a BOM would be great.
Eskimos24 If only I could give this more than one like bro.
Godfrey Poon naw too much schmoo to feel any rough spots.
"Never trust the work that came before you even if you did that work because there is no easier person to fool than yourself" Words of wisdom, AVE, words of wisdom right there.
Do a brutal BOLTR on a HF grinder, wouldn't cost much LOL
This would be fun!
He did one already
He did a powerfist recip saw, but no grinder...
Got mine for a dozen pesos to cut a bent lower control arm out. The locking button and spring mechanism broke on the first day. Wasn't worth the fuel going to return it. Still chooches, but definitely not for professional use.
I would enjoy a Hater Fight grinder teardown.
I have two black & decker wildcat 9" angle grinders from the '70s that my dad owned. They still chooch just fine and are complete beasts. I have the scars to prove it. Cheers.
Have three newer models I got from work for free that were broken and they changed the ring gear a little it now has a metal washer for the lock up and the gear is power now not forged
Powder metal
Was it this version or a smaller 4.5"?
I believe they were 4.5" with the electric brake function but I ended up putting bigger guards on
Internals looked the same but the switch was different I think the switch controlls the brake function
Have a 7" Makita side grinder that's been used for building woodburning stoves to oil rigs. Can't imagine what I have NOT used it for. It's over 30 years old and I've only had to replace the brushes (which were soooo easy to get to. Will have to replace the cord as slinging it around by same over the years has worn havoc..Great program. Leave it on even when I'm not watching to hear you go on and on..hypnotic..
BTW, it's the oldest tool I own...
That is a beautiful thing! Though I gotta ask: Am I the only one that takes apart new power tools the second they come out of the box, and re-greases the gears with a high-quality high-pressure grease? :D
I use either honda 60 or liqui-moly's LM47 long life
I did it on my dewalt dw831 after watching the boltr done on one. As soon as I got it from Amazon I opened it up, cleaned it out and put in the good stuff.
I sometimes re-grease, and another good idea is to run brushed motors like these on reduced voltage for a couple hours to seat the brushes, 12v DC usually works OK for 120v AC universal motors. If it has a triac speed control you may have to bypass that. Have done it to everything from kitchen appliances to vacuum cleaners to these tools.
but warranty
Some one once showed us how to remove the warranty voided stickers out of Teflon.
my dads been a welder and engineer in the same company since leaving collage till the day he retired, he loves your vids. apart from the colloquialisms he's just like you.
A contusion is a bruise, not a scrape.
The epoxy coating around the commutator tangs is called gel banding.
It's used to prevent fatigue failures of the copper fusing at the tangs when there is either very high speed involved or radial flexing of the main shaft.
you are my favorite Canadian🇺🇸
+AvE those are really good. I also have a dewilt 5/6" and love them. I have had the 1 for 3 years... I'm a pipeline welder so they get used 6 days a week the problem I had with 1 was the cord caught fire in the handle but replaced it and 2 years later still good. I have an ac 7" Makita grinder that works great on my sa200 as well (dc only machine)
After the apocalypse i will be climbing over the huge piles of Dewilt products with my Makita grinder gripped in my mechanical hand, witch i made myself, and face the zombie hoard with all the other Makita owners!
Lol so true i will team up with u :)
harbor freight sells a chaisaw disc, its a grinder blade with a chainsaw chain attached.
Yeah i have seen it when i was in the store lol its like a 4 inch wheel i have always wondered if it was any good .it would probably get saw dust in side of it
the full range of the extension cord !!
Yes extra long and heavy cord. Also zombie proof.
Hi AvE, Just found this vid due to my own blues with my Makita GA9000. The bearing you referred to as 608 at the end of the commutator (close to the power switch) on my grinder got so hot and burned the end of the fields wires including those ring wires... At disassembly the bearing disintegrated totally and all I could find on the floor was 4 bearing balls and a bearing side cover. The centre part of the bearing is still on the commutator and it is a bit of a challenge to remove :D Thanx for an awesome informative vid.
love the content
+AvE no friggin problem
+AvE also when are you planning to make another paid vidjeo
+AvE cool well ill buy any vids when ya got'em
+AvE especially when the bush is burnin if ya know what i mean
I have the smaller Makita grinder from 1995-ish. I got it so hot the fan melted and started rattling around. I was in the field and had to get the job done so I opened her up and pulled the fan off. I still use it today. I always intend to only use it for short light jobs, but frequently get it so hot I can't hold it so I put on the welding gloves. The detent on the switch is toast so I have to hold it, but the damn thing won't die so it still gets occasional use. I'll use it till it stops.
legend has it AvE will reply if you are semi early
+AvE :)
+AvE by the way great vidjeo
+AvE hi uncle
Is it premature or just strategic early ending?
I've had a DeWilt 4 1/2" for years, always had a nasty rattle to it but held strong. Got a couple spent Hazard Fraughts given to me after 6 months use, brushes were completely spent. Then got a Metabo 5" gifted to me after 2 yrs use, had a cut in the cord insulation and could no longer be used "safely" thanks to the clipboard warriors. It is a BEAST. No rattle, pure torque machine.
How do you peoples explain your "Focus You Fack!" t-shirts? No matter how I do it it sounds dirty... lol
That grinder ruled!! I bought one in Highschool and many years ago it is still going strong. Good enough for the girls I go out with.
"Magnetic slop".........love it.
There exists magnetic gears
afroninjadeluxe
Magnetic bearings are my favorite.
I revved a floating magnet to over 120kRPM.
It was amazing.
theLuigiFan0007 noted. Thats really nice, was it a vacuum?
afroninjadeluxe
It wasn't in a vacuum, but the neodymium magnet was a sphere shaped one about 9-10mm across. Essentially, the only thing touching the sphere as it accelerated was air, and a sphere is pretty aerodynamic. Hall effect sensors and optical sensors provide feedback on position and it hold it in place like one of those floating globes. That's commonly referred to as a magnetic bearing. All it needs to do then is start shifting the field so it rotates, while still keeping it afloat, and you have acceleration. In my configuration there's no speed limit, just the magnet providing feedback to the rotating field generator, so it goes as fast as it feels like. I measured the AC frequency at about 2kHz, and as the power draw dropped off significantly a few seconds after reaching said speed, it was safe to assume the magnet wasn't lagging the field much.
And trust me, I stood well back and used a computer and cheap webcam to observe the thing from the other room. If the sphere flys off, well that's pretty much gonna leave a mark on what it hits.
I am a huge makita fan nice to see you finally doing a tear down on one and showing there good.
Please please please please do a tear down on a newer drill just to see if there still as good.
my dad had a makita power drill for like 25 years. finally died. makitas are badass.
love makita tools. held on to a makita grinder for about a year and a half never broke down. literally 10 hours a day grinding granite. just awesome. would love to see the sjs grinder system.
Like some have suggested, honestly. Do a HF angle grinder.
Lets how how bad (or not?) they REALLY are! I ain't gonna break into mama's christmas money that's for darn sure!
I made the mistake of buying a King brand grinder for a project a while back. This is a brand i would equate with HF brand. It lasted less then 25 min before it seized (bearing) and started smoking. Because i owned other (proper) grinders for work and i just needed one for odd home projects i decided to replace it with the Ryobi rat tail (a brand i would generally avoid at all costs)and have been pleasantly surprised with it especially given the price point. The ergonomics, the adjustable handle that i originally thought was gimmicky has actually been useful, reasonably powered and it probably saw 30hrs of grinding in it's first week of life. Couple years later and still kicking, though lightly used since.
I really wanna see him rip apart some Cambodian tyre (Mastercrap)
Aren't those clones of old Bosch grinders? They kind of look like them, at least the castings, minus the bigger lip on the seating position.
I got a lot of cheap grinders. (15$ each)
I almost never change disks, because I have one for each type. And I go easy on them. A coulpe of them I've had for years and they still work. the lock is a Joke but since I don't have to change disks all the time its ok.
Also had one I bought just to do one job, and ofc it failed within 10 minutes, actually caught fire and tripped the breaker. that was a 50$ tool, Hyundai brand, so you know one not to buy.
+Tristan Peoples You can say what you want about CT Mastercraft tools, but I have yet to have one fail me. I have a variety of their stuff because when it comes on sale, it can't be beat by the other more name brand stuff. Granted, I don't make my living off my tools, so I may have a different opinion them. I've got a grinder, drill press, plunge/fixed base router kit, super cheap table saw, and sliding compound miter saw. The table saw is lightweight, so the base is pretty flimsy, but I've ripped boards, plywood and MDF with it. Probably all on the same blade. My only complaints are that it's not big enough and that the fence has a terrible lock. But on sale and with my mittful of Canadian Tire pesos, I think I spent ninety bucks on it. The miter saw cuts spot on once you tweak the laser, but my good Lord it's a noisy cork soaker. Makes me wonder if there's any grease in it. The router is exactly the same as a Craftsman. Right down to the casting and moulding. I'm guessing most of this stuff is made in the same factories.
Now, their Jobmate brand...that's on par with the Power Fist crap.
From Buford Ga myself. That Makita factory is still in business and as enigmatic as ever. Never met an employ from there and they must all run to and from their cars since no one is ever seen coming or going.....
Oompaloompas
Can you use this to grind coffee beans?
Yeah
not for public
It's only about 10 times as powerful as your average coffee grinder.
it would make pretty fine expresso beans
no. but its great for dancing
I've had my makita 10" grinder for 25 years. My neighbor from across the street gave it to me. Best tool i ever got for free.
when you get here early you are exempt from the vice.
Hey you lazy fucker, get off the beach and tell me how to control the weeds in my lawn!
+jrpNH3 lol
Doood man. I can't thank you enough for all your Vajios. They are always a laugh with a ton of learning. If you did Ted talks that would be TH-cam gold. Thanks again man.
$64,000 Christy Clark question: Does she chooch?
I have had my chiquita over 25 years, got 2 out of a scrap bin. Made one out of the two. I use it often. One set of brushes. My young shop helper is now hooks on your vijeos too. Peace....
"she's good enough for the girls I go out with" hahah😂 this guy kills me
AvE is my favorite engineering professor. When I started watching him, I didn't understand a friggin word, now I really feel like I'm learning.
Who the hell is disliking these?
Dewalt owners
12 year old trolls that are mad at their moms for not getting them an Iphone 6S plus instead of a regular Iphone 6S
25 dislikes at 127k views is pretty damn good if you ask me.
Inept klutzes that are jealous of people who can work with their hands.
Auto-dislikers.
My dad has the same grinder. And man it is bullit-proof. Looks to be about 75 years old and works like its brand new. scoocum for sure!
Metabo makes that thing look like a kitchen blender
lol... k
Yeah, but those are almost $500...
+Teth47 lol more like 200$. not sure what shit hole your from
RtSROFLhacks Canada.
+RtSROFLhacks Canada ain't no shithole
Intentionally mispronouncing "Shiboleth" is especially funny.
God... just went through a 3 day course on Magnetic Particle Testing... your description could've saved me 12 hours of class!
i was gonna unsubscribe if you do another 2 minute video (joking). your videos crack me up. lol lol lol lol.
lolololololololololol
WOLOLO.
AAAAAAAHHHHUUUUEEEEEEEEEEEEEEEEEEEEEEEEEEE
You gave a good simple description of eddy current losses and hysteresis losses, but they are two different things. You seemed to equate them or use them interchangeably even though you properly explained them.
Hey AvE, I'd love to see you cover Makita's new generation of grinders -- like the Ga5042. Just bought one myself because i was hoping its built as well as their older tools. Its got some fancy dancy electric features like speed control and soft start, so id like to see if they kept up the same quality, or if they cheapened out. Thanks!
My grandpa trusted Makita for all his carpentry tools and he was right to do so. I trust that blue-green color just like he did.
Its a acoustic magnetic tag. The tag vibrates and reflects a specific pattern via a specific magnetic waveform. The sensormatic tags are much more reliable then the checkpoint tags. The tag is not perfectly flat to allow a metal strip inside the tag to vibrate.
Makita Rocks... SOME of the Best tools Made
Many Blessings , SMR
Great analogy for the explanation of hysteresis! Strong work.
I became a die-hard Makita fan when I was working maintenance at a custom circuit board factory. I used and abused a grinder and a cordless drill trying to keep the old building from falling apart and the Makitas just kept on rolling when the other stuff they had would crap the bed. I've always kept Makitas in the home shop ever since.
Can tell you love the Makita grinders...they are awesome. I picked me up an almost free.99 tool...a 6-inch metabo grinder for $2.50. Skookum as frig after I fixed the sticky trigger!
Fun fact. The gear drive for a 7.3 powerstroke High Pressure Oil Pump is held in place the exact same way the pinion gear is on this grinder. One bolt, torqued to 95ft lbs holds the gear to the pump. Pretty Shweet. But if you don’t get her torqued down enough when the engine gets hot resulting in slippage.
I've never seen something built so robust. Your videos are awesome!
I just bought a 7” Makita (GA7020) from Amazon because I was so impressed with the review. Now I have to find a use for it...
Excellent video, I encourage my family to watch these because, in my opinion, you are the Carl Sagan of tools and home shopcraft.
Honestly wish that they would lighten the trigger pull on them thou,
I can grind overhead all day and my finger is the first thing to get tired.
Feels like its gotta be a 15 pound trigger pull, same with the hammer drills, just brutal
Not to beat a dead horse. Hysteresis was demonstrated at 6:26. It's the movement of the switch between the on and off state. In this region, the output can be on or off depending on its previous state.
Love Makita they in my opinion they are the best for there price my dad gave me a bunch of Makita electric tools they are 50 years old and still run amazing
Used to detail cars for a living when I was younger and I got pretty serious about the tools of the trade. Can confirm, Makita makes one hell of a good buffer, and I reckon it's only about 20% different parts to this grinder. To get a better rotary buffer than the Makita, you've got to spend at least twice as much.
Have one of these at work. A good one for sure. Funny to hear the sound, and feel like working
Man, I've got a Makita corded drill that's 25 years old, 3/8ths chuck, it's still going. Granted I don't put that many hours on it but my brother polished two cars with it, I don't know how many hours that took but that would have killed a lesser tool right there.
It's still going, hole saws, drywall screws, it's done it all and just keeps going.
I’ve beat on makita grinders in welding shops for over 10 years and they don’t quit , ever . I’ve run them in the rain , dirt, grime and dropped them lots and they keep running
i haven't seen the video yet but these are the videos I love to see