How To Quickly Sharpen A Lawn Mower Blade (With An Angle Grinder)
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- เผยแพร่เมื่อ 22 ส.ค. 2021
- Today we're doing a quick video on a requested topic, which is how to sharpen a lawn mower blade with an angle grinder. Thankfully we we're building our new setup to do such a thing at our storage locker, so here ya go!
Sharpening a lawn mower blade is very simple to do, you want to make sure you get the right angle and have the right tools, that's it! We use a battery powered angle grinder, a small balancing cone, and you're good to go. Fresh lawn mower blades ready to cut a beautiful lawn.
Which technique do you guys use to sharpen lawn mower blades? Do you use a flap disc, or a grinder disc? The one we used was a 40grit flap disc in this video, I'll try to leave a link below.
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Cheap Blade Balancer: amzn.to/3sLx3Ld
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What’s your guys technique for sharpening blades? Flap disc + grinder? Something else? Lmk 👇👇
Thanks for the reminder and kind of push to take care of some snow upgrades now before all the salters are sold and mechanics are booked. Just brought home my new in bed salter, taking it to another level this year salting some private roads. Leaf canvas scheduled for install next Monday! Lets get it!!
bench grinder
I put them flat in my vise and use the angle grinder with a flap disc. First pass under, one to two passes on top and a little clean up under pass to finish. Sharpness test is if it easily peels a fingernail
@@conorsmith5471 that’s awesome man, congrats!
Hmmm are those Ballard blades? Lol Interesting
Love the grinder flap disk combo. I use it with the all American sharpener and it's perfect edges every time.
Excellent, I just went into 5he garage and sharpened 6 blades, worked a treat 👍🏻
8 years ago i taught my son lawncare/landscaping. last month he came home and taught me to sharpen blades with a flap disk. A Polish friend of mine saw the all american sharpener and said he can duplicate it. I bought that prototype off him and call it the "all polish sharpener". Kinda funny how it all works. I don't think I would be who I am without all the great people around me
Looking like a professional, sharpening those blades! Good job Brian.💯❤️👍🏾😀🙋🏽♀️✝️🙏🏾🇺🇸
Love watching you Spencer lawn care lawn care juggernaut and blades of grass
I Really Like The Setup 👌 For Touching Up Mower Blades ! That Seems To Work The Best. For When You Are Far From Home 😁 Thank You For Sharing 👍
Ok thanks for the tip, for years I’ve been paying to have my blades sharpened, went out and bought an angle grinder and balancer, took me all of ten min and my blades stay straight unlike the place that was sharpening for me kept destroying my blades, rounding corners and take a quarter off the width at a time! Much better now
Good stuff. Nice work on keeping that angle.
Great video! We're going to try this method!!
Thank you, this was great... Will save me time and money doing it myself.
Wow that intro song. Surface by Aero Chord. Haven't heard that in years. Very nostalgic.
Hey Brian I took your advice last year and got an All American set up. And now you backed out doing it the cheaper way.
Definitely one of my preferred methods for sharpening mower blades...but mulching blades are definitely trickier to perfect with this method due to the curvature of the blade.
That's the way I do it and it works great 👍.
Excellent idea
Worth watching just for the board. Thanks
Wow i been using the weong blade disc all this time 😮
Amazing video bro 👍
Awesome video brother 👍😎
Appreciate this video
I've found it easier to sharpen and keep the blade angle by placing the blade at the bottom of the clamp with the blade perpendicular to the ground.
Hope the weather is starting to cool down for you. Always great value in each video, nicely done.
This is by far the best way I've found to sharpen blades without some kind of expensive jig. It wouldn't be effective for badly chewed up blades but if you're not into mowing rocks, give this a try.
Ty for the video sir
I’m going to try the flap disk today on a brush hog (farm tractor mower)
You are living in a perfect world ! most blades I get look like they have been chewed on by a bever !!
nothing wrong with getting chewed by a beaver :-)
Awesome. That's alot to sharpen blades tho. They last longer for us. But dif things can factor in. Blade height type of grass. How tall and thick the grass is your cutting. We used to have a few big fields we did every few weeks. Our blades last atleast a week longer now after dropping thoes
I use a belt sander for all our equipment with blades
I personally like using my belt sander...keeps it flat and straight
That's all I've ever used is a grinder and flap disc. Doesn't take off as much material as a grinding wheel and make them sharper.
i always thought i was pretty good at sharpening blades with a grinder (when i was using a grinder- i had better luck using a grinding wheel over using a flap disc.) but i HIGHLY recommend getting an actual blade sharpener. no matter how good you think you are at getting that 30degree angle with a regular grinder, your not. and its way faster using an actual sharpener. get the rbg 712 OR the all american blade sharpener- you still use a grinder using this device. i use this if i have to sharpen a blade out on my route (it can be used mobile) i use the rbg in my shop. the all american sharpener takes a second to get set up the first couple times of using it, but once you get it dialed its an excellent unit. i also reccomend changing the grinding wheels every few blades you sharpen depending on how much the blades need to be sharpened (when using the all american sharpener)
The grinder sounds good my Milwaukee does not sound as good and I do a lot of grinding
A machinist taught me to never remove the backside burrs with the disk, use a flat file and “ back draw” them. Love the Dewalt
True story
What's the benefit of file vs disc?
@@brentotto6193 To remove the burrs, a disc is WAY too aggressive, you just gently file them away.
@@TheR00k1e2 Pulling the file towards yourself, as opposed to pushing away.
Floppy is just fine , just don’t be retarded
Plumber Joe knows what is going on 😉👍
Great video Brian, I use the RGB 712! But an angle grinder works awesome for touch up!
You spelled his name wrong, Dela 😂
@@brianandlynphilippines oops I am human, I am not perfect
I use a bench grinder and finish with a file to make sure i get the burr off
Any thoughts on the blades that sharpen themselves the more you use them? I know a set for my Ferris with 52" deck runs about $180 for 3 blades
How often do you sharpen/replace blades? And how many lawns per blade sharpening?
Basically the same set up I use. Flap wheel, cordless grinder. Been working great for 3 years
What grit do you use?
@@mannyc805 80 grit
@@meegstomtom thank you 🙏
@@mannyc805 any time. I feel 80 grit is fast enough but still makes for a clean smooth edge. And doesn't heat the blades up
what grit of flap wheel do you find works well? Thanks!
Just bolt on some samurai swords and it'll shave grass just driving over it ... 😂 Cheers from Arkansas brother...I had to, it had me laughing
What sanding grit would you recommend to give you the best results without having to do so many passes on a blade.
I prefer to sharpen my blades by hand. I don’t take off as much metal this way. You did a fine job though and I appreciate this video.
Hey Brian, nice grinder. Looks like it takes a lot of metal off with each pass. I'm thinking about using my vibrater sander with 100 grit. Because it's smaller, I think you can follow the contour of the bevel on the blade much better. Enjoyed the video!
I don’t think it’s taking as much as you think off, imo
I've been using the angle grinder + flap disc for a few years now. It takes off very little metal so your blades last a lot longer. Like Brian, I usually sharpen every 8-10 hours and it takes longer to remove and replace the blades than it does to sharpen with the flap disc.
Trick for balnacing blades when you don't have a balancer handy. Put a nail in a vertical piece of material and hang it from that. The heavy side will fall. It's not perfect, but it will get you very close.
Not accurate at all.
Brian
When you buy brand new blades, do you sharpen them or use them as they come
Thanks
Question do you think an 80 grit is too rough on the lawn mower blade. Thank you
I have a star blade, with 5 or 6 points. Hard to balance. I know why they make them, but what a pain it is!!!
All American Sharpener for me...Freehand has too much room for operator error with angles, etc...
RBG 712. 👍
💯👍
I have always done it this way but i use a file to knock off the bur on the under side of the blade
That's the way to do it 👍
Hey Brian I was wondering what size your storage locker is?
Hey Brian can you tell us the brand of the disk. Please 🙏
Did you know you can “balance” blades with a round shank screwdriver?
What grit is that flat disk. Thank you
Brian making replica Hatori Hanzo swords.
You could polish that up real nice by touching it up with a flat file you would youse on rakers for your chainsaw.
A simple hand file works well. It takes very little effort to create a sharp edge and no power tools needed.
What grit flap disc you guys using?
I bought 80 , I didn’t realize different grit ,just looked for flap disc and grabbed the first one
It’s 80
Exactly how I do it. Let's you sharpen with out taki g to much metal out of the blade to fast
Looks good where is your great American sharpener?
Did you ever get your rbg?
We did!
Does any know the brand of disk ?
I did great with that disk until a finger came in contact with the disk. Since it is large, the guard was off the grinder. Right through the leather gloves and down to the bone.
Yikes!
Why did you stop at the bone? Just keep grinding through it
I thought you used the All American Blade sharpener?
Brian, what happened to the All American Blade Sharpener?
Nothing, we just sold our jig since we bought the RBG 712.
Brian,
What would you recommend for us homeowners for sharpening our blades?
This exact setup! Or a $6 sharpen from your local dealer, since you’ll probably only really need a sharpen once a year.
@@BriansLawnMaintenance thanks Brian, maybe In some of these how too videos maybe drop a quick how to for us normal guys who live where we don’t get lawn service. Love the videos.
Just get an electric grinder with a cord probably run you 20 or 30 bucks and the flap disc is like $6 and you're good to go
I’ve never heard of balancing blades id assume it’s for the spindles but I’ve yet to have an issue
ive never balanced mine .... worked for me for the last 35 years .... i usually only sharpen once though ..... when they get dull, the next time they are wore out ... we have a bit of sand here, hard on blades
Are you happy with your 18hp Billy Goat leaf loader or do you sometimes wish you had a little more power?
Nope, I love it. If you're going with a full dump trailer leaf box, I'd get the 37hp unit. Otherwise, the 18 has been just fine for us. We did a whole separate video on comparing leaf loaders, check it out!
Thank you Brian! I am putting together a set up similar to yours with a dump insert on my F250 with a leaf box. I will go with the 18hp leaf loader to start.
What frit do you guys recommend?
40-60
The last time i had my blades shapened by a local guy, they ended up off balance😑.
Can't wait to get my All American Sharpener, & own grinder with flap discs.
I love mine I think you'll feel the same way once you get your set up right
My question is how many ppl sharpen there brand new blades besides me? Just feal that few seconds with the flap disk gets them razor sharp
I do not personally
Our company actually bought the magna Matic it was like $1000 let me tell you I’ve use the RBG and the hand grinder but this thing sharpens blades very fast Downside it’s just expensive but in my opinion it was worth every penny we have over 300 clients so we are cutting 300 lawns plus a week so you know how much sharpening that is
Very cool!
What about that bad dog diamond blade which is $200 lifetime guarantee? You guys ever try that in a grinder? It looks awesome it’s just I wouldn’t use it enough to justify the purchase. Although you can use it to cut concrete as well so it might be useful if you also do landscaping bricks.
@@timtrainer10 Never tried that one or heard of it but the RBG is a good price plus it’s made in the USA. I would go with that one first give you the exact angle every time.
balance don't have to with these beefy spindles and commercial mowers never do mine no spindles yet
Ya same here haha
My zero turn blades are so fucking dull it’s insane ! Going to bust out the grinder on them this week 😅
I've got 4 small blades on my mower, how do you balance those
Use a balancing cone for $5.
How do you get tool companies to send you tools because I've spent well over $3000 with Milwaukee and about $5000 with Husqvarna.
Just grow a large social media following I guess. Dunno, they reached out to us. God bless.
Just get like a Honda generator from Lowe’s or Harbor freight
You could turn Doyle Brunson into a quiet watcher, with a good smack with that thing.
I meant Doyle Hargrove lol sorry
Whats the brand for those disks?
Just home depot ones!
This way or the rgb712? Thks
Rbg712!
Out of the list of tools where it would be a really good idea to use some safety gear like gloves or a face shield, this would be one of them. Got the ear protection at least. Oh well, your body, your choice. I can’t say I don’t prefer going raw dog while grinding with my tool as well.
Also funny, we got people that rip on others for not wearing a mask out in public but then go home and start grinding metal and sanding wood, lacquering floors etc with no protection whatsoever, lol…
You can get away with doing it this way but you're definitely changing the angle a bit.
Yup. That’s why the All American sharpener is a solid crutch. Or a more expensive option like the RBG712, then again that’s also $600+.
8 to 10 hours? I go a whole damn season.
Yeah, but how to sharpen when the blade has a slight curve to it?
Is this the 20th vid on this subject??
Have you herd off yellow hornet sold on Amazon. I use flap with it check it out love mine
Yes but not a truly useful tool. Get a dedicated grinder.
It is dedicated grinder mounted on yellow hornet witch has the correct 30% angle. I sharpened 5 sets off blades with it last week. I called it yellow jacket by mistake it is A yellow hornet . I have a grinder with 40 grit flap mounted on it .
Pretty disappointed in how chewed up my new Ballard blades were in only like 5 hours of mowing
Never, and I mean never, use something as uncontrollable as an angle grinder to take the burr off the flat side of a blade. You should be doing that very carefully with a flat file. Can't get your flat side back and it's 50% (and the other edge being the other 50%) of what makes up a good cutting angle.
"That angle is everything..."
No. No, it's not.
It's not the space shuttle. It's a lawn mower.
Go at it carefully with your angle grinder and flap disk.
Try to maintain something reasonably close to the factory bevel.
Get a nice edge on it, and make sure it's balanced.
If the angle of the bevel isn't perfect, your grass won't care.
Not true at all. While it’s not the space shuttle, there’s a lot to plant and turf health care. If you don’t know what you’re talking about, which is obvious, then I’d not offer your two cents on what a professional knows.
Most grass gets cut with dull blades. If you sharpen yours frequently, good on you. The homeowner who sharpens his blades regularly will have a healthier lawn than the guy who sharpens them once a year, even if the angle isn't exact. The best advice to the homeowner is, don't let perfect be the enemy of good. Maintain your equipment and don't sweat the small stuff.
Well you know you will always have one guy chiming in telling you your doing it wrong. Well here ya go. I have sharpened for years and not just mower blades but anything that cuts made out of metal. I owned a business doing it. So I have a RBG 712 and All American sharpener. Your sparks are flying the wrong way my friend. So I see someone also commented Country Side also did a video using his RBG. If you watch it check out which way the sparks are flying. Toward the blade VS yours flying away from the blade. Your sending the burr toward the edge. He is sending the burr toward the inside of the blade which is correct. At least your header does not say correctly. But hey if its sharp go with it.
Blades are never supposed to be super sharp, new blades are never sharp, and never go near the underside.
Bad! No balancer? Bad! Never sharpen if you're not gonna balance the blade right then.
Always balance!!
I just watched the idiot at next level diy channel say the correct way is to use a file. LOL !! And An angle grinder will destroy your blade.
That's a screwed up blade first you always use a stone disc grind towards the blade at set angle and grind off enough metal to re straighten the edge and get the back side flat again never grind the back his blades look shiny and pretty but I can see the angle flaws and they'll dull in the first use.. thanks but most homeowners etc can't tell oh also us something with a set angle or clamp temporarly guide to blade and grind until angle is uniform.
yeah try to do that on a mulching blade with curve that is a real test of how good you are???!!!!!
for me i am struggling to sharpen a mulching blade with curves and I have NOT found anyone that builds a jig for a curvy blade; i have to do some brain thinking to come up with my own
sharpen a straight blade is a piece of cake. easy peasy especially with a jig!!!!!!!!!!!!!!
Carefull with the speed, blade is heat treated, I have heard...