The Atop for $200+ may be your only hand jig salvation today for 3/8" full comp chisel(only). If you fail to monitor those four things, you won't get a correct finished product. I'd be happy to do a vid(with some camera help) on using the Granberg chisel jig, but you can't go out and buy one.so really, what would be the point? Using that jig, since it's a hand jig, there are about four things going on all at the same time. Classically, you do it wrong and your saw will pull to the right or left in cuts.maddening. And Madsen's instruction are primarily aimed at using the Simington.
You really need a mentor watching you for awhile as you get started. I'm a huge advocate for Madsen's but their instructions for sharpening square file are confusing. I think Billy still round files some of his saw chain because he bought used saws that came with chain and he's on a budget like most of us. And the good news is there is a lot of square file chain now on the market for 3/8" chain. Buckin Billy has a vid on using his square file Simington and the closeups of his finished cutters scream, "I'm gonna rip your wood apart!" I don't know of anybody on a pro level that once switched to square file and got the sharpening part correct, ever went back to round file. The saws cut through them like butter people bail on square file chain because they don't sharpen it correctly. I had 120 acres of woods on my farm and my saws had ample workouts in Black walnut and various Oaks. When I moved back to MO after a long stint in the PNW I only had saws setup with. However, it's not exclusively a PNW softwood chain either. It only gets dull quickly with wood that's embedded in clay, dirt and rock. I don't wanna get into the usual battle of the chain's shortcomings. The naysayers on this kind of chain are legion. I'd love to have the Simington square file grinder for $1,000+ but realizing that won't be a reality, I'll stay with the Granberg. Mostly on an old Granberg Fie-n-Joint chisel jig. I have been square filing chisel chain since the 70's.
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