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25 to 30 thousanths is about right.
Some people probably wont like this but I eye ball it. A set number of passes with a flat file depending on how much the teeth are filed. I also side file the rakers starting when the chains are about half wore out. I get all I can out of them and like then to grab just a bit.
Actually, the shop is more right than you know. You're at that 'in-between' stage where you're finally beginning to learn about how a chain should be sharpened but you haven't yet begun to file your own chains yet. One or two more wasted trips to the dealer to let the kid grind your chains wrong for $8 a pop and you might be ready to buy a couple files and begin filing your own chains. 95% of people who pay to have their chains sharpened don't know the difference. Those who do know, won't let the kid with the grinder near their chains. And grinding changes the temper of the teeth so the chain is more difficult to file by hand after the kid has cooked the teeth by getting them too hot.
i use a small flat file that is about 6 inches long, really fine cut. i take 3 strokes per raker for hardwood and maybe one less for soft wood.do them all equal just like when you sharpen the chain. or your chain may start to jump up and down while cutting. never seen that but it could.put the flat file down on the chain from cutter top to cutter top and look at the clearance you have on a raker, before and after you file them. you can see what you are taking off.like the guys said, they have a guage that you put over the chain and file off what sticks up, pretty simple but i never used one.
Quote from: Dan_F on September 19, 2008, 12:31:24 amSome people probably wont like this but I eye ball it. A set number of passes with a flat file depending on how much the teeth are filed. I also side file the rakers starting when the chains are about half wore out. I get all I can out of them and like then to grab just a bit. DanNot up to us to like it or not like the way you like to do things... If you like it, that is good enough for me.Now, I expect redwood is much more forgiving that white oak, but that would just be my guess. I don't follow the 'side file' of the rakers.
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