angle grinder mower blade


  #1  
Old 05-02-17, 12:54 PM
Q
Member
Thread Starter
Join Date: Jun 2014
Location: Canada
Posts: 1,653
Received 1 Upvote on 1 Post
angle grinder mower blade

I sharpen my mower blades using an angle grinder.
I've always done this by the disc spinning into the edge and never had any trouble but a lot of sites recommend to have it spin away from the edge.
Does it matter? The metal on these blades is usually soft enough that it gets sharp quickly.
 
  #2  
Old 05-02-17, 01:36 PM
A
Member
Join Date: Jan 2013
Location: U.S.A.
Posts: 1,902
Received 73 Upvotes on 66 Posts
I only use the grinder every so often, as a lot of times a file will suffice, but when I do, I run it from the inside out because it's easier to see what I am doing from the end of the blade rather than from the middle. You're not looking for a knife edge, so I have never considered direction that critical. The main things are that is does a pretty quick job so you need to watch that you don't take off more than you want, and to pace it so that you don't overheat the blade.
 
  #3  
Old 05-02-17, 02:09 PM
J
Member
Join Date: Jan 2011
Location: USA
Posts: 4,461
Received 126 Upvotes on 111 Posts
Disk will last longer if you change direction.
I switched to 40 grit flap wheel instead of a grinding disk works great and less heat and seems to be faster.
 
  #4  
Old 05-02-17, 03:52 PM
Q
Member
Thread Starter
Join Date: Jun 2014
Location: Canada
Posts: 1,653
Received 1 Upvote on 1 Post
Does the direction matter for kickback? I always assumed the grinder would not catch an edge on this type of metal
 
  #5  
Old 05-02-17, 04:19 PM
Marq1's Avatar
Member
Join Date: Sep 2016
Location: USA MI
Posts: 9,747
Received 1,209 Upvotes on 1,098 Posts
I would think it's a safety thing, you dont want the grinder turning into the sharp edge where it could catch.

Also you always want to grind with the sparks away from you!
 
  #6  
Old 05-02-17, 04:32 PM
B
Member
Join Date: Oct 2008
Location: New England
Posts: 9,460
Received 47 Upvotes on 43 Posts
When you sharpen from the blade towards the edge it can leave a thin piece of metal on that edge. If you grind from the edge towards the blade it removes that excess edge. But as said, on it really doesn't matter on a mower blade. The more razor sharp you make it the faster it will get dull.

Bud
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: