WHAT DRILL BIT IS BEST DRILL?
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We have a look at the most common drill bits, how they work and when to use them. We go through bit selection for large and small holes in wood, plastic, brass, aluminum, bronze, steel and tool steel. We have a look at tungsten carbide and HSS bits.
long term projects here: / ave
Lowlights include:
-Poking fun at woodworkers
-split point versus chisel point
-what size pilot to drill
-hole saws and slugging bits
-Drilling Wood, Plastic, Steel, brass, bronze, tool steel and stone
Vid Credit The Highland Woodworker: • The Highland Woodworke...
H. O. Studley tool cabinet, guided by Don Williams and Chris Schwarz. (I tried to contact them, but didn't get a reply; so fair use, etc...)
"Carrying on with the cheese analogy, this is like, uh, a diamond."
I gotta try that cheese
This made me clap and laugh which scared the doggo.
that had me cry laughing. lolololol
I stopped the vid and backed it up to make sure I heard it right. What a hoot.
diamond or 90 months old Parmigiano Reggiano ;)
I do contract work in a tree carcuss processing mill. It's definitely not for the faint of heart. In fact, if vegetarians saw what they did to those poor trees they would probably start eating meat.
It's sometimes hilarious to talk to people that won't eat something. Sometimes you'll get a hell of a story.
@@robertthomas5906 Oh, yeah! By the way, if you order from KFC don't order the salty stuff , order the spicy stuff. The salty things get ordered about half as much as the spicy so there's way bigger of a chance to get bad meat. I worked there for 3 months and was one of their most reliable guys.
@@BusinessWolf1 Ugh. KFC. I complained about my last visit there. They offered me a free meal. To me that's about what it's worth - nothing.
I have a feeling they had no clue what they were doing. Probably shouldn't have been open.
@@robertthomas5906 What? KFC is healthier than mcdonald's and other shitty fast food.
@@BusinessWolf1 Well "at least healthier than shitty food in taste"
I just love your malanguage and straight forward common sense. Oil makes smoke, twist drills are cheap, time is expensive.
Good speech sir!.
Almost broke my nose one time when using a twist drill bit & battery powered drill to make a 1/2" hole in schedule 80 PVC pipe. I was standing on a stool and operating the drill face adjacent when drilling my hole straight down from the 12 o'clock pos on the pipe. I was holding the drill in an awkward but stable way until that 1/2" drill bit BIT into the PVC. The drill spun, broke free of my tentative grip, rotated a quick 270+ degrees and the battery pack of the cordless drill clipped my nose as it spun. I was bleeding a little and had a swollen nose but really It had the same impact as getting hit in the balls by a toddler with a wiffle bat. No long term damage but lesson facking learned!
" carrying on with the cheese analogy.. this is a diamond" lol
I just spent a week in Canada for work, and not a single person talked like you. so dissapointed.
keith dalton I’ve lived in Canada my entire life never heard someone talk like this either till Alberta
duncan verm Well, my Dad, RIP, and all my uncles talked like that constantly. They all worked on a market farm and in the bush in work camps - much like AvE and the boys in the patch. That’s where a lot of this comes from ... self taught men.
Only the married ones talk like him.
I'm from Canada and I have met a few people who talk like this (sounds mostly like Maritimes to me), but lots who don't. Canada is a big country with lots of different accents, just like 'Murica. Compare Massachusetts, Virginia, Louisiana, Texas and Wisconsin. What part of Canada did you visit? Torontonians (people from T'ron'o) tend to sound like upstate New York. (esp. Buffalo) Prairie provinces tend to sound like North-West states. Quebec and North-East Ontario have lots of different influences.
Canadians do NOT say 'aboot.' We say 'abowt' while 'Muricans say 'abauht.'
Watch the letterkenny.
should be required viewing for all shop classes.. sending this to my sons right now...
Thanks muchly...
i actually didnt know a whole lot about drill types before this. for me it was just "works with wood" and "works with metal and wood", then sometimes "that didnt work". thanks for the informative video :D
"Carrying on with the cheese analogy, this is.. Umm.. Diamond" I love your channel, AvE. 😂😂😂😂😂
If I ever talk in a manner half as interesting as this guy, my life will be a success
9:37 -- "...and the reason is because Aluminum -- RATHER, Aluminium...." -- *LULZ*
*Aluminiumati Confirmed.*
Refreshing to hear a voice of experience and hardened knowledge vs a “google expert” and what a great sense of humour to boot! I envy this guy.
"carrying on with the cheese analogy this is like uhhh.... Diamond"
10/10 Would eat cheese with you anytime.
Chopping holes in cabinets and furniture for 40 years, I've found that using just a slight "wallering" action with the hole-saws really helps to evacuate the crud. This also allows the cutout to fall from the hole-saw with a quick tap in reverse.
Supercool video! One of the BEST and most useful episodes! All the knowledge and little things in one package. Awesome! Thanx for all the knowledge and the most attractive way of presenting it and for the narration. My grandfather, a machine-building-engineer with a lot of different education and experience taught me a lot of things about mechanics in a workshop but Ifelt like I missed some little things in my knowledge about drill bits. This video filled these gaps perfectly. You're a good teacher, AvE!
Nice vid, as an apprentice in the UK in the early 90's the first thing we learned was how to sharpen drills with the stepped edge. We spent the first class resharpening boxes of dull drill bits from the year before! Has been so invaluable as even now at work I've found when you get a crappy brand new drill bit that barely cuts through stainless, a few minutes on the bench grinder and it's chewing though like a hot knife through butter!!
AvE, have you thought about publishing some kind of dictionary or glossary for all of your technical jargon?
that's a good fuckin idea
I thought the same thing.
Goyabee you just tripped my tripper switch! I was thinking that exact same thing 30 seconds before I read your reply!
@@ElTiBo44 this is his published würks
goyabee he could be a writer for Letterkenny. Or a character. Tool store guy or something.
Thanks for all this information! Here's a tip for everyone, if you've ever tried to drill hardened or heat treated (wear) steel, you know it's an almost impossible, totally frustrating, very expensive undertaking if you use regular drill bits but try using carbide tipped masonry drill bits. Works way, WAY better. Still not great, you will still go through a lot of bits but you will get the job done and the bits are relatively inexpensive. Of course use LOTS of lubricant/coolant. I use used motor oil, probably not the greatest but I got plenty of it.
Mostly I'm in it for the word salad, but this was highly educational. Great vidjeo!
I, too, listen for similar reason. I also noticed he snuck in the "correct" pronunciation of the US State of Missouri. "Correct" meaning how Missourians pronounce their own State name, not necessarily how I pronounce it.
+cmans79tr7 I'm from Missouri and everyone in my general location pronounces it much like misery. I'm from the southwest part of the state btw.
I'm in Missouri and the only people who say Missoura are morons and politicians that are pandering to said morons.
+Andy Schuette Exactly what this guy just said!
Muhzurruh is more of a north/middle rural thing. I'm in Saline County and it's pretty much a town/country split here.
16:14 - "if you're that small, you can hand-drill"
17:15 - "they're soft down here and hard up there"
This vid is a gold mine... X)
I have an obscene infatuation with tree carcasses
AvE what if I have no interest in recovery?
Buy a welder. The rest will sort itself out.
What if I have an obscene infatuation with watching people who themselves have a obscene infatuation with dead tree carcasses. Dear lord..., I wonder what webMD has to say about this.
Michael Wheeler that only made it worse. Much much worse
Trent Wainwright hahahaha!
Finally split point, chisel point, and the need for pilot bit explained. Made it to 60 year old and never knew. Thank you!
That part in the End is so true. Fresh from school, university or college
and the little shit is trying to tell yeah what to do by the book. Love that.
Ofcourse I use Tables, Formula and so forth. But they are only guidelines and not the rule.
If you have experience, know your tools and material, then you will quickly find out how to
compensate for variables. I was once turning a precision piece for a hydraulic actuator and
my lathe settings wasn't quite like in the book. It was running quite fast but the feed speed was
lower. Why? Well the Material was not ordinary brass and I wanted to make a quite tight tolerance
with a fine surface so that the boring process wouldn't take so long and the tool wouldn't have
to work that hard. (The tool wasn't great so I had to be careful. EXPERIENCE!)
After Lunch I came back to the machine and the settings where all fucked, as well as the the piece I made.
What happened? Our new Bimbo McCuntfart of the Engineering and Repair Department who freshly
graduated from Asshole University of Cocksuckerton figured he could have a go and finish my piece.
3 hours of work fucked up with chatter marks and hole that was too deep. It was a very complex valve piece.
And since we don't have a CNC Machine, it was all done by hand...
That Fucker even had the arrogance of handing me the piece and telling me it was my fault.
"If you would have used the right settings beforehand, it wouldn't be ruined."
I took my protocol, checked the settings on the lathe and saw that everything was screwed with.
I asked my boss too take a look. His head turned red and he crumbled the copy of my protocol
He then turned to Engineer and said in German "If you want to keep your job, get out of the maintenance shop."
And flicked the paper in his face...
Anyway. For the fresh guys out there: Don't fuck around with other people
or their stuff and don't tell a experienced worker how to work.
WE KNOW WHAT WE ARE DOING....
I like the part where you got abducted by aliens.
OK. Reason why i 'borrow' my regimes & settings from experienced, not from the books. I never had technical education though
MrJizzy181
Just an armchair warrior here, so no experience whatsoever but I must say you are very convincing. 😄
PREACH IT!!!
CNC cutter grinder here: most Carbide cutting tools are cobalt sintered. I work for a former holding of seco and know they use a 6-10% cobalt lattice. Love your videos!
Hello my name is Simon and I'm a woodworker. It's been 2 days since I last worked with my wood.
This brought memories back. Letter drills. I'd forgotten all about them and we did use them in the UK when I did my apprenticeship. (We used both imperial and metric sizes though imperial hadn't been officially adopted at the time. We also had drawings in in either metric and imperial, sometimes both and there's a possibility for confusion and mistakes.) We used to make our own pin vices when i was based in the tool room in toolmaking.
Hey, some of us "smokers" might enjoy the smell of burning sulfur in the shop! 😜
Use a pilot hole?? Well damn, I must have been doing it wrong this whole time!
Common chisel points..... don't fail me now!!
What about spur point bits
this video led me down the gullet vs material rabbithole and helped alleviate a massive blindspot in my working knowledge, thank you AvE. once again youve helped me in my battle with my own empire of dirt!
I like to strap those hole saws on an angle grinder. Usually more torque than a drill and more stable with the extra handle.
That's genius!
Sounds like fun.
Milwuakee's hole hog is that same concept
Sounds sketchy as frig
I've got 2 sets of Wentworth bits, and taps, dad bought them from a Norton dealer in 1974. We have built 21 bikes, I finished the last one when he was injured. You two woulda been a riot to share the shop with
"on the cheese scale this is a diamond" HAHAHA I love this guy
Centering bits are used on refrigeration compressor degassing drills.
They use an pneumatic Atlas Copco drill like a die grinder that takes a centering drill that has a flat side and two notches so you press and turn to lock it in the chuck.
Round the drill is a collar with 2 large suction pipes and two small pipes for a pair of vacuum sensors.
there is a synthetic rubber cup on the end of the sleeve with two rings for an inner and outer suction cup.
One pipe and one line are connected to the outer suction cup that holds the drill on the compressor casing, the other sucks the turnings, oil and refrigerant gas from the compressor and refrigerant circuit.
I feel like your shop is worth more than my Eastern European self will make in my life
If that thought is in your head then yes, yes it is😂
Cheers from Sudbury Ontario! Your videos are awesome! 2nd year millwright apprentice and I’ve picked up a lot of little tricks just from watching your channel. Thanks, man!
Being able to PROPERLY sharpen a drill bit is a lost art.
Drill Doctor
MOAHS lmao good joke.
Thanks but I am not learning anything this time. I have many years of experience.
R/I'mverysmart
I was taught while I worked at a machine shop by the old man who owned the place. I'm the only person I know that can do it. Oh yeah, don't forget the cup of water and dress that wheel up before you start.
Thanks AvE. I learned a bunch of new tricks. These seem obvious in retrospect, but it is the sort of thing you don’t always realise unless you get to watch someone else do their work.
Cobalt drills are great for harder steels without the cost of carbide. Carbide drills are only really useful for making tons of parts in a cnc where you can dial in the speeds and feeds, because they are picky about settings. They last way longer but you gotta justify the cost by making lots of holes with the settings dialed. They can cut way faster too.
Great video! I would just add that the cutting angle is a super interesting component of drilling holes and any other cutting processes. You mentioned "brassing off" or dulling the drill bit, but I believe the better explanation is that a neutral cutting angle is best for softer materials like plastic, brass, etc. I have a set of drill bits that I've honed the edge to be a neutral cutting angle and they don't grab.
I love you man. I mean that totally platonic. This is like watching things that matter in life vs. the crap that you find on the boobtube. Rock on, from Western NY where people get their hands dirty...I love my spring loaded center punch (and my little pcnc)... I bought a certain personal cnc built in china but designed in the USA(yet rigid as a bull showing off) and got hooked upon your most righteous videos. While playing your stuff like an 8 track looping in the background while I work to your sage advice and explanations. Loving my new machining pre-retiremnet situation and listening to your stuff whilst i'm working. Hoping to see more from you soon my friend.
Hey, can you advise on how much CNC like yours will set one back in $$ plz?
i only have started watching your channel recently, but i really love your videos! the depth on how you go in to the machinary and all that stuff,you teach people every minute. cant say nothing less than i love it!
Wow, that was like a feature length documentary! I think we got more than just the tip this time.
Another way to evacuate chips using a hole saw is to mark the circumference of the blade and drill a couple holes on the inside of the cut to allow chip evacuation. That brace bit we call augers here in Scotland
LOVE the humor side of this, VERY funny and still very educational.
"continuing with the cheese analogy, this is like... .... ..... .... Diamond"
"Chinesium" material
"I like to polish my tool like the next man"
Thank you for showing me this years ago!
I am a j-man tree carcass shaper, but I have moved up to millwright apprentice...
I learned that manipulating tree carcass es was wrong....
the best part is I work at a brewery...
Turning absolutely useless grass into liquid ambrosia. Science!
So basically some guy is always holding your beer
dont ever change the way you speak in these videos its awesome and hilarious your content is phenomenal my friend!!!!
"These things work like a train toilet"
Did you just anglicize a Finnish saying?
some people didn't have grade 10 shop class. they took basket weaving or some crap. i made some of my "friends" watch this after they chowdered some of my premium chinesium bits to shit. they seemed smarter afterward. thank you AVE.
that cheap drill index case - usually one of the twist drills has fallen down off the little ledge that holds them at the right height - when the ass end pokes down the index and case won't fold. Drives me nuts every time.
This video would have saved me countless hours when I worked as a self trained cutting tool engineer for a major automotive manufacturer. This is a damn good primer on the topic of drilling.
"This automatic center punch is one handed." Proceeds to use 2 hands 😂😂😂😂
nothing wrong with using two hands...as long as you can.
hey quick tip to help make a split point drill u got to use a dressed grinding wheel or iv also used cut off wheels on a bench grinder, just something that has a nice sharp edge to the side of the wheel. so anyways hold the chisel edge parallel to the side of the grinding wheel with the dill at like a 45deg angle vertical and close to center of the wheel cutting height and feed it in to just the center of the drill tip point while cutting to the chisel edge with the side of the wheel. may have to work at it a few times to get it right and also try to keep a slight cut back below the chisel edge for clearance for the cutting edge so maybe while holding the drill up to the wheel just sweep it a few deg. learned this from our tool maker/grinder guy at work.
I can listen to you for hours. :-)
"Work like a trained toilet........" Nearly spit my coffee.
One thing I discovered that works good for a cutting fluid is boiled linseed oil. It bites so hard that I tend to thin it out with mineral spirits so that the drill bit won't bite too hard
Excuse me ...... (3 seconds later) "My Rum and Coke is broken" .... Cheese reference starts at 12.10 - You my friend are Bloody Brilliant.
I was just rewatching to send my friend the cheese analogy, thanks for the the info! (I still laughed out loud enough to stir the misses the 2nd go around)
15:17 I use one of those Jackobs chucks that are meant for electric screwdrivers (the smaller ones with the hexagonal shank). Works rether well, one chuck fits a lot of drills and the hexagon fits nicely in the "main" chuck, all for just about 10 bucks.
"Carrying on with the cheese analogy, this is diamond"
I love your word-plays reminds me of my father and grandfather truly wish more people had good sense of humor like this and I love your videos quite educational and entertaining
I realized this is a 30 minute long video after watching for 25 minutes.
35, actually
Most jobbing shops in the UK still use Metric/ Imperial / Letter stamp drills .... It's still quite common here and we still use Imperial and BA threads too ... ;-) Center drill are ok, but you'll find that Spot drills when your CNC machining are better ... If your going any depth with a center drill the ends tend to jam up & twist off leaving the center drill tip in the job ... ! Wait till you start getting into U drills and rapid material removal .. Ohhhh Boy ... !!!
You REALLY want to know about drills if you watch a 35 minutes video about it... I did :)
And it doesn't even seem that long!
I DO know about drills, but I couldn't stop watching.
nevermind all the biology and sex ed included lol....
I learned more than a couple things but the one that brought back memories....the chisel end versus the split point.
The first shop I worked at when I wasnt worth much for productivity and money making a mentor would hand me a broken twist drill out of his tool box "go sharpen it" I would do what I could and come back with a shit eatin grin and hand it to him, he would load er into a drill and just lay into it into what ever the hardest material he could find. Smoke and chowder later the twist drill thrown at me "it aint worth a shit, do it right" Long story longer, I got really experienced with the grinding wheel and broken or chewed twist drills.
I had noticed that split point twist drills worked really great without a pilot hole, no idea why and never really tried to find out. I worked and worked on making split points by hand on a wheel and I eventually got it and they work great. It was a real art I had learned but rusty now for that but good old memories. 25 years later
Thanks for the vids man, I always enjoy and learn something, Make me laugh and remind of people I've known along my journey
I wear my safety glasses on top of my head. then when I see the clip board warrior I just flick them on real quick
to sharpen the split tip back on you pit the cutting edge along the side of the grinding wheel and grind the relief with the face of the wheel. it takes a steady hand and a good clean crisp corner on the wheel but works well . you can turn all your chisel tips to splits in a hurry with a little practice. great channel thanks for all your hard work on these vids !!
Love this educational and extremely funny vid!! :))
I live in Sheffield, England and actually have some old Presto drills (And Footprint one's too somewhere)!! :)
Perfect! As someone new to all this, this video answered all the questions I had that I was too embarrassed to ask! Made me laugh a lot as well! Sent you some beer money through Patreon.
Another trick for finding center of a hole transfer is use same size drill bit or very slightly smaller & tap with hammer & then rotate the bit to a 90 degree angle to the first strike & hit again. This will leave an "X" mark that you can then hit with center punch & center drill to prep for desired drill for hole.
good way to shatter a bit... done it before...
tyler friskie
Put some poor-man's dykem (black sharpie) in the center of the hole. Push and rotate the drill bit (preferably split point), this will give you a clean scratch in the center of your hole to punch without risking breaking the tip.
Good tip...I'll give it a try! We have Dykem Marks at work & they are even better than a sharpie because the "paint" dries & stays for a long time!
Just give the bit a love tap - don't go at it like a 200 lb gorilla...plus you don't want to damage your tip (just the tip mind you). I also use a tap with a sharp point to put a center mark on before using the center drill...those you do have to be carful off...I had one shatter & embed a chunk in my arm....don't use little taps..8mm or so is good!
Nicely done! This guy knows what he is talking about here!!
*Ice in an empty glass sound* "Excuse me, my rum and coke is broken"
That was more in-depth than I expected, probably should have checked the video length, lol.
Cleared up a couple of questions I had, thx!
"It's even legal now in Missouri, who am I to judge?" Best quote ever.
Born and raised in Missouri. But what does this saying mean??
@@SomeoneVx kinda wondering that myself as a fellow Missourian.
Good Man! Showing H.O. Studley's tool set. He was a great Craftsman.
Wipe some washing up liquid to the inside your glasses, they don't fog up. Simple easy tip from cold mornings biking across the Lancashire hills...
Another thing that works incredibly well is good old spit! Not a lung-cookie a.k.a. loogy, but just the thin saliva you get if you imagine biting into a lemon(sorry for the visual!). As a life-long skin and scuba diver we use it on the inside of our masks to prevent fogging and it works perfectly, and is free :) Sadly, if you haven't just brushed your teeth it can stink for a bit, as I'm sure anyone with a nose knows.
We use shampoo for icehockey visors too
Center drill with the mill and DRO is awesome for laying out holes, especially if you have to cross drill through round stuff.
When drilling very thin plastics, high speed and low feed are critical, as well as holding onto you piece.
If you don't have enough ripums, you're going to helicopter.
hellacopter ;)
I'll admit, i laughed a little harder than i should've at this comment
Do you have to yell "Get to the choppa!" as you pierce through?
Bi-Metal Hole Saw Chip Removal -- Drill (proper term "Bore") one or two (1/4" or larger) holes JUST inside the hole being cut with the large bi-metal blade. The smaller hole(s) allow saw dust to escape during the drilling operation without smoke and fire.
Joe S
More expensive = more better!
Most bestest!
Didn't you watch the Festool BOLTR?
Unless you're talking Festool...
Not skookum
milfukee hand drill has pretty mediocre preformation, but so to most hand drills.
milfukee ain't the cheepest
You my dear are hilarious and a smartie. Love you so f-ing much, I sent the link to my Dad. He just about busted a gut. Not a nut, his gut! Now you are a regular part of our language: "Now you're just making smoke!" "Are you friggin' and a fussin' around?"
Oh and I played the trick o him with the reverse thread. Took him a couple seconds!
Carrying on with the cheese analogy...."Diamond" HAHHAHA
I start watching u r channel not because of the tech but the laughter :) keep u with the great job!
Take the time to learn how to hand sharpen drills and tools and go for the super expensive stuff. You will never regret that decision, home owners especially (and for the love of god do yourself a favor and work with metric :) The headaches are significantly less). I've drilled countless holes with shitty bits, I can make them work if I need to. But the average 300 pound gorilla is just gonna lean on that thing and mushroom it to shit. Proper HSS drills will at least take the heat. We used to challenge each other around the shop, who can sharpen a drill by hand like a machine would. Heck I remember being busy with a job, discovering an old drill in a drawer and being very exited to have another drill to sharpen real quick. Dropped everything and ran to the bench grinder like a little kid.
P.S. Just a little tip for doing second cuts or split tip as you call it. Use a diamond dresser and clean up your wheel beforehand, I'ts nice to have a stone with a sharp corner. Then clamp a little bump stop with a vertical face on your tool rest so you can really get that plunge line spot on. You can then run the drill backwards and forwards along that stop to get a clean cut. It's not really free handing at this point, but hey, gotta eat too. I have a 6mm pilot drill that has his own little spot on a wall shelf cleverly called "pilot". It's the only drill I ever sharpen like that, or have to. So my "clamp" is just a welded piece of angle iron that only works for that specific 6mm.
I like the way this guy minces as many words as possible with the highest possible frequency, but somehow doesn't end up mincing any words whatsoever.
The technical term for the Aluminum Oxide layer corrosion stoppification is "Passivation". What for impressin' the ladies with the linguistics.
Edited because of the brilliant feature auto-incorrect. It saves you time by making sure you're wrong every other time.
I would rather use oxide layer to get her in the layin' mood. Especially chickens, if you want eggs.
Layer? I barely know her!
or you can just get the old johnny out of the shed and say hello
I'm a manual machinist myself, over here in the queens England and I never use pilot holes when using the standard chisel point, cuts perfectly fine, yes it's easier with a pilot but not necessary
I am upset you didn't use the Metabo with the nail in the first bit just to taunt people more.
I love starrett also Ave, they have the best tap wrenches ever designed. Spring steel jaws that are perfectly machined and never give way. I wish all tool companies focused on quality like starrett. Very nice set of pin vises. Expensive stuff
"This is like uh... Diamond." I laughed a little too hard xD
Frame you fack! That's a new one.
Great vidjao!
Best vid I have been seen looking at for many a wet cave explorations, would enjoy a time to see you making and making use of hand made tools of any color of hair over the wide world of skin. Keep your tool in dry place if you find it rusts, put back in the moist place if it doesn't!
I really like this video, it was really informative. I've noticed that when you do a BOLTR and get to the part where you examine the grease that you seem to know a lot about grease and what makes good grease and what is just cheap Chinese schmoo. This kind of got me interested in knowing how do you pick what grease for what job, what actually makes them good and what kind of nifty specialty greases are there?
In the south we call it jezz.
Subscribe to the free "Machinery Lubrication" magazine and "Uptime". A wealth of info.
I can imagine your video skyrocketing in popularity if you just edit them with soundboard music it will amplify your humor
A very, very good video. Thank you for this!
On the hilti "concrete" hammer drill bits there is a marking an inch down or so. If the marking is still there and the drill brakes you will get a new one totally free! I qoute: "The anchor suitability indicator on the head helps ensure trouble-free anchor installation - the holes are accurate so long as the wear mark is visible.
In the unlikely event of breakage, the drill bit will be replaced so long as the wear mark on the helix is still visible."
Want fun? Catch the rebar with the bit. Done that before with a Hilti hammer drill...... not fun.
happens to me everyday. no fun while up on the ladder to. then you wanna curse out the foremen when he ask what's going on. #PFO
Yeah, that's when you think you broke the Hilti, because it suddenly ratchets, but then realize that it has a safety clutch. Wish my Metabo drill had that when it broke my hand.
superdau Holly fuck
You have a hard time not hitting rebar going through a concrete floor with a 1-1/2" masonry bit. Just back off the pressure, brace with your knee (or wall) and let the company buy a new bit when you're done :P
ouch
Hey @AvE for the hole saws, i drill a few smaller holes along the id of the cut, makes room for the saw dust to escape . Thousand year old woodtrikk!
Drilling glass wasn't covered. I tried both Diamond drills and standard metal/Wood drillbits with the glass object submerged in turpentine (abrasive liquid) and it works fine. But finding out where to counter drill was quite a bit of a pain in the sack. Only a curly hair wrong, and the whole thing shatters. Any tips and pointers?
I'd like to know, too. There are a lot of good applications for glass or glass-like products.
have you tried pilot drilling the hole? With glass you grind you don't cut so metal/wood bits are useless, you need something impregnated with carbide or diamond which I'm sure you can find a tool on google. The glass can't be tempered prior to drilling
And drilling glazed tiles - challenging! water jet cutting is the biz though!
Using the turpentine method any drill can be used. Very little force must be applied. It's acctually the turpentine that does the real job. Even the blunt end of the drillbit will drill in glass, but the sharp end is less prone to snag and chip the edge of the hole. Pilot drilling is as hard since cracking occurs when two missaligned holes meet and wedges into each other. Diamond hole drills (like a tube) is quite easy to use but when you lack the appropriate size you must resort to other methods.
universal drill bit plus water cooling
Can i upvote this video 1000 times? I'd sure like to, the advice is scookum as f, and a true recomendation for any type that wants to do real work.
"work like a train toilet" I guess that's a good thing!
those greyhounds ever developed a toilet in it ... LOL
I have the exact same hole saw set in the exact same plastic box. It gets used here and there on wood carcasses. I had the exact same issues with them, I thought they weren't cutting but then they do!
I have that very same holesaw set in Australia. I think it was $8. Biggest sack of crap but I use it once or twice a year.
love these kinds of videos, as a mechanical engineering student anytime i can learn stuff like this is awesome.