Jed
TreeHouser
Weirdest Thing. We've got this foreman who transferred over here from the Philadelphia office who had never seen or heard of square-grind before. "Why wld you ever use that," he asked. So, after explaining about the straighter and faster cutting bit, I added that, since the top-plate angles are less severe, (about 15 degrees with square, as opposed to some 35 degrees with round) than round grind, the drivers pull much less hard to either side in the bar groove than round, thus minimizing friction, and prolonging the life of the guide bars. "Oh," he said.
Next thing you know the shop gives him a brand new 660. Next thing you know, he tells me that the brand new 32" stock guide bar is "bent, or something, cause it won't cut straight, no matter what I do...." Of course we just accuse him of being a crummy sharpener, but here's the thing: I've always seen that his top-plate angles were very, very good, and consistent, AND, I've always known his saws to cut straight when mine had a broken pull-cord, or whatever.
Anyway, they buy him another brand-new bar, this time a 25", which he actually wanted. East-Coaster, what can I say. The thing runs absolutely perfectly for about two months, and then WHAM. All of the sudden, the darned thing will not go through a log. When you try to dog it around through a big cut, it suddenly just locks up (no burrs at all, believe me: I already thought of that) and will not go farther no matter how hard you lean on that pig.
Any guesses? I'm as stumped as a Cottonwood.
P.S. After saying that he sharpens really well, I WILL tell you that he cuts his side-plates a little too deep, because he really likes that super-aggressive "pull" feeling that the acute "beak" of the side-plate of a round-filed chain will provide.
Next thing you know the shop gives him a brand new 660. Next thing you know, he tells me that the brand new 32" stock guide bar is "bent, or something, cause it won't cut straight, no matter what I do...." Of course we just accuse him of being a crummy sharpener, but here's the thing: I've always seen that his top-plate angles were very, very good, and consistent, AND, I've always known his saws to cut straight when mine had a broken pull-cord, or whatever.
Anyway, they buy him another brand-new bar, this time a 25", which he actually wanted. East-Coaster, what can I say. The thing runs absolutely perfectly for about two months, and then WHAM. All of the sudden, the darned thing will not go through a log. When you try to dog it around through a big cut, it suddenly just locks up (no burrs at all, believe me: I already thought of that) and will not go farther no matter how hard you lean on that pig.
Any guesses? I'm as stumped as a Cottonwood.
P.S. After saying that he sharpens really well, I WILL tell you that he cuts his side-plates a little too deep, because he really likes that super-aggressive "pull" feeling that the acute "beak" of the side-plate of a round-filed chain will provide.