jetsam
Minister of Fire
Thanks for the Carteton link,
(broken link removed to http://www.azwoodturners.org/wood/wp-content/uploads/2019/03/Carlton-Chain-sharpening-Complete-Book.pdf)
So that’s how a saw chain works. You’re never too old to learn. It’s not like I haven’t filed a chain or cut any wood. My first saw, 49 years ago, was a Homelite then a Partner R17 and an R20 followed by a couple of Husqvanas, Rancher 55 and a 323. I’ve logged our former 70 acre wood lot, worked a stint for small operation cutting logs and four foot softwood pulp, cleared house house and garden sites and of course firewood. I’m sure I’ve made and worked through all the mistakes the Carleton article shows but somehow came to maintain a well cutting saw. Still, knowing how that tooth pivots and lifts into the cut make the rest of the info make so much sense. From what Carleton says I might have to be more precise if I had an XP model with the higher rpms. Buying my first chisel chain the advice I got and followed was ‘file up a little from straight across’. Carleton recommends 10 degrees. I’m wondering how many do this.
Oregon specifies a 10° tilt on all of their crosscut full chisel, 0° on semichisel. I grind and file at a 10° tilt on all my full chisel chains. I can't swear that it actually matters, but I'm not likely to switch them (it costs metal to re-profile a chain, and it's also convenient to know that all my full chisel has the same angles on it).
They have some 45° ripping chains too, I would like to see what that profile looks like.