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So true.

I can relate to that. Later in my career I started using a grinder. Though it took some time to master. Through a period of trial and error I eventually did. After that I only used a file to touch up a slightly worn chain in the field.

Come to think of it the latter were made Portugal. Almost forgot that. Thanks

The Oberg double-bevel files I use to buy in the 80s would generally last the life of a chain. One chain one file. By the late 90s it took 3 Oberg double-bevel files to sharpen a chain through its life. One chain 3 files. Files cost $6 bug each. The moral of the story: You sell far more...

With everything being equal full comp chain is smoother cutting all around. But sharpening it... oh... not worth it in my opinion. Now when ripping slabs of burl a full comp square chain can produce a surface that needs very little sanding for a good finish. A good app for full comp. By the...

Whenever I had a wore out chain that same supervisor would look at it and tell me, "you could cut for another week with this chain." This went on a couple of times and I was getting tired of it. So the next time I had a worn out chain I bored it into the rock road where we were working...

Yeah, so many people, like myself in the learning years, blame their sharpening when actually it's the bar wearing out. I had a supervisor come out on the job once and question my request for a new bar on a company saw. He said there was nothing wrong with the bar and I told him to try and cut...

From my own experience, during the early years, I discovered bar wear was a major contributing factor in my chains cutting performance. Until I learned that I blamed the poor cutting performance on my sharpening. Yes! Bar wear was often the culprit. All the little things start coming...

A good cutting chain is also about keeping the rakers at the right height for what you're cutting, and keeping the gullets cleaned out as the cutters become shorter. Either one of those two things, if neglected, can dramatically decrease cutting performance,,,... even with the best sharpened chain.

When filing square chain there's a lot more relative angles think about. The learning curve can be long and frustrating, and that's why most people used a grinder to sharpen their square chains.

Actually, Inbredjeds.

About 40 years ago an old fellow told me the very same thing. However, he explained to me the reason, "If your file height is either too high or too low to begin with it can help keep the undercut of the top plate within spec much better." Ahh... 20 years later, after learning how to file...