Mine was a basket case when I got it. Had to rebuild motor, surface grind slide back flat and fab up new chain holders. That was the easy part. The slide was not aligned with the arbor. That made the right side cutter side plate angle deeper than the left. Had to get creative on that one. Been solid since I got it fixed up though. Made several nice cutting chains with it. Made several not so nice chains too. Lol
The flatter the angle under the top plate is going to self feed and cut faster. It doesn't last as long since it's a thinner corner.
In theory, your exactly right. But I've seen some chains that looked like fido' hind end that would mortally fly. Black magic my friend...black magic...
It's worked most of the time for me that way. Never used any. I think copsey was the only one that used them that I remember
To keep things really simple and cost effective (read ; cheap) I like finishing the extra sharp ones with a used file. The used files are not aggressive at all and can give a mirror like finish when a delicate hand is used.
........................... Aaaaaand out comes some of the "magic dust" mdavlee keeps in his Tenn pants pockets
Cause the light saber melts the material right out from under the bar... See now why you have to use "The Force" when filing?
I saw some magic brown dust when flush cutting a stump yesterday ,the rh cutters did not like the brown dust .