How to sharpen Lawn Mower Blades | 4.5" Angle Grinder

This video will teach you how to sharpen lawnmower blades with a 4.5" angle grinder. I will also cover important safety information regarding disk selection, installation and use.
Flap Disk I Used (4.5")
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My angle Grinder (4.5")
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11R Vise Grips
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Face Shield
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Sharpening Stone
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Contact Me:
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(Disclaimer) As an Amazon Associate, I earn a small commission from anything purchased in the amazon link(s) posted in this description. I use these funds to purchase new gear and reinvest into the channel. Thank you!

[@kristianoleme]

Honestly, the best video I have ever watched on how to do this... I mean I spend countless hours and dollars taking blades to be sharpened... no more!

[@GregoryHenderson-py6sm]

Very instructive video. One thing you did not mention is sharpening the blades evenly so that they are balanced. If you take more material off one end of the blade than the other, vibration will occur. I work around this problem by counting the number of even passes I make on each end. I used to use a blade balancer after each sharpening to ensure they were indeed balanced. However, by utilizing the counting method I found that the blades were balanced every time. Thanks for taking the time to make this video. On my way to pick up a 60 grit flap disk.

[@gamestyleoffire]

Very good tutorial 👌

[@garygronich6533]

IT IS ALWAYS ADVISE TO KEEP THE BLADES BALANCED.

[@Meedav]

Great Video..... Sometimes I mark the cutting blade with a black sharpie,.... so that I can clearly see where I'm removing material.

[@braddhuston-hall8956]

My method has always been very crappy or having someone else do it lol so when I looked up how to correctly sharpen...your video came up and I have learned so much! Thank you

[@TBill2]

Good job providing the important details! Thx

[@dlkline27]

Unless you get one of those expensive sharpening jigs, flap disc and angle grinder is absolutely the best method for sharpening mower blades.

[@mauriceharrington8623]

Great detailed video! Thanks for sharing. I'll be using a flap disc instead of grinding wheel from now on. 👍🏿

[@JohnKeane-do7bw]

Excellent detail. Thanks

[@Jayman001]

I do mine same way you do!😊

[@jonnyalesech8685]

I've always used a bastard mill file but I might give this a go

[@OldSoulMillennial]

This should save you a many hours of a sharpenin'

[@peterknezevici8719]

i set my lawn mower blade on the angle 30 deg, so that grinding surface is flat

[@OldSoulMillennial]

How do you clamp them down at a 30 degree angle?

[@user-en3jh4el6l]

combustion engine, electric motor.