Chainsaw Repair

This chain had 3 or 4 teeth hardened.  I tried multiple times with the file I had been using with no luck.  Pulled out a brand new Pferd file, still no luck.  Both files subsequently did OK on another tooth in the same chain.

I know a grinder would probably do it, but I don't fancy bringing it back in for that, since that's probably what caused the problem in the first place.

John Mc

hit those teeth with the dremmel a bit to get rid of the surface.

Now WHY didn't I think of that?  I forgot I even owned one.  It might even be worth picking up the appropriate sized bit for the dremel...

I had been using Oregon files.  Just started the box of Pferd files a month or so ago.  I thought I'd also try some of the Save Edge files next time around.

It's probabley not just case hardened .I'd imagine the whole cutter is hard .Well I suppose in some freak way just one cutter might have over heated while it was being ground and cased it a tad .

If they factory grind it like I assume it's done with coolant .Periodically the wheel needs dressed for two reasons .They get out of shape or they get loaded up .A loaded grinder wheel coolant or not will really drive heat into the steel .It's a form of tool steel and can it ever get hard .

A couple of years back I bought some loops of Sabre '880' 3/8 chain for a Homelite I was running.  I was intrigued by the shape of the cutter because it isnt quite semi chisel nor is it full chisel.  It has an odd groove running down the side of the cutter.  Even though its new chain, its very hard and difficult to sharpen.  Thinking it was the chrome plating, I used it when in dirty wood.  The aggressive Save Edge files wont clean it up unless you push it.  If I can get a couple pics to come out, I will post them up.