I want to post pics but my camera is fcuked.
I will try and find one around the house tomorrow and see what I can do.
I will try and find one around the house tomorrow and see what I can do.
The first time I filed this chain I used 7/32 and it took me roughly 90 minutes to get every tooth shiny and sharp because the chain refused to be filed. I was watching each stroke of the file and it was in full contact with the metal. The next time I used 3/16 and spent extra time making sure each tooth had the correct shape, as though it had been filed with 7/32. When I go to file it with a 7/32 it still sits in the tooth perfectly, but it just slides through. If I file for long enough it will eventually become shiny like normal but it takes ages on each tooth, and this is with new files. The tooth still gets filed evenly, as expected, it just takes forever.
Switch over to even a fairly used 3/16 file and it works like it should. Only like I said, I have to spend a little more time making sure each tooth gets filed properly and I dont undermine the cutting edge by filing out the gullet too much.
Like I said, other chains of the same specs file just fine with the same 7/32 files that refuse to work on the chain in question.
I am thinking that you have been using a 3/16 for a while, and you are just hitting the very top of the chisel, and would have to do so until you work the larger diameter in.
Kind of like this crude sketch.
View attachment 768315
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