sharpening chipper knives

[Maui Palm & Tree Care]

my boss showed me a neat technique that doesnt change the temper of the knives. we used a belt sander with 80 grit and it worked like a charm with alittle elbow grease and a few minuts. i thought id share this info for those of you who wanna save some $$$ in between sending them in to get sharpened.

 

[frashdog]

How do you know it's not changing the temper?
How do you mitigate the heat?
How do you do it?

 

[Maui Palm & Tree Care]

the belt sander doesn't create the kinda heat that will cause your blades to loose thier temper and crack.

the type of machine is a table top belt sander. you hold the blades upside down and sand the blade of the knife. if it starts getting hot in your hand you back off and wait a few seconds then go back to sanding.
just try it. i know it sounds like alot of work but its way way cheaper the sending them off to a place to have them properly sharpened. it works!