I collect a lot of saws and have all kinds of chain that arrives with them. This past weekend I had a couple that I tried to file and one in particular the file would not touch. I even tried a brand new file thinking perhaps I had a really dull one in my hand. This was a .404 chain with a really rough looking cutter, I was using a 7/32" file.
Now, the question is, what can someone do to a chain that makes it so hard you can't touch it with a file? I had another similar one that I was able to work through, but some of the rakers were so hard they scratched the new flat file I was using! Others I could get cut down once I got through the "crust".
I have been around saws and chains for more than 40 years and sharpening my own chains for nearly 30 years and I have never seen a case like this before.
Ideas?
Mark
Now, the question is, what can someone do to a chain that makes it so hard you can't touch it with a file? I had another similar one that I was able to work through, but some of the rakers were so hard they scratched the new flat file I was using! Others I could get cut down once I got through the "crust".
I have been around saws and chains for more than 40 years and sharpening my own chains for nearly 30 years and I have never seen a case like this before.
Ideas?
Mark