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Dunno about it being a faster sharpening process. Maybe for someone well practiced, but it'll take awhile to get there. Checkout this article...How To File Square Chisel Chain
best thing I can tell you to do is get a wooden file holder and flatten the 2 sides across from each other so the holder fits in between your thumb and finger , now place the file in the holder at the angle for the under plate angle and now you hold the file the same cause of the 2 flat spots on the holder . You now have 2 of the 3 angles pretty much under control , its not hard to do . Believe me when I started out filing bush chains and race chains cause I needed them to race very few would file a chain for me and made it seem like its unreal hard to do , Its not nor does it take someone special to do it . Just get some chain and files and go to town on it , File a few stokes on a tooth and take a look at what the file is doing . if its not what you like to see change 1 of the file angles abit and see what changes on the tooth . I have helped a few friends learn and in 30 minutes most have the idea on how to file pretty good and if I can do it then teach someone you know it cannot be very hard cause lots say I'm not the sharpest tool in the shed
I use the Pferd double bevel square chisel bit files SKU#15070, I think. These run about 15 bucks a pop and as was pointed out, that's a lot more than round files, however I got a LOT longer life out of these files, so it's not a straight comparison., plus you can do your rakers with the same file. I also use round files. I find, once my hands are programmed, the square is faster to file and also easier to do on a stump in the field. That's just me. It took me a couple of tries to get it right. If you use the search function you can find several other threads here on the forum with useful information. This comes up once or twice a year. The question of this style tooth dulling faster is still up for debate. I did not find this in my field use. Research indicates this is a rumor spread by Oregon years ago because they didn't want to get into supplying square ground chain. I buy my loops as round ground full chisel, and after a while I file them as square, depending on my mood and the wood. Good luck, you have to work at it a bit in the beginning, don't give up.
Quote from: Old Greenhorn on November 21, 2020, 09:54:59 PMI use the Pferd double bevel square chisel bit files SKU#15070, I think. These run about 15 bucks a pop and as was pointed out, that's a lot more than round files, however I got a LOT longer life out of these files, so it's not a straight comparison., plus you can do your rakers with the same file. I also use round files. I find, once my hands are programmed, the square is faster to file and also easier to do on a stump in the field. That's just me. It took me a couple of tries to get it right. If you use the search function you can find several other threads here on the forum with useful information. This comes up once or twice a year. The question of this style tooth dulling faster is still up for debate. I did not find this in my field use. Research indicates this is a rumor spread by Oregon years ago because they didn't want to get into supplying square ground chain. I buy my loops as round ground full chisel, and after a while I file them as square, depending on my mood and the wood. Good luck, you have to work at it a bit in the beginning, don't give up.I'm with you on everything you said except for the Oregon rumor. They have always made square file pro chain. I have been using their 68CJ chain for over forty five yrs. They still make it and Madsen's sells it by the roll or loop. But somebody did start the rumors about chisel chain dulling so fast.....I don't know who did it or why , but I heard it even pre-Internet....remember then(?)....!I learned to square file on the stump(on the job). That was a stupid, horrible way to learn;watching helpless as my cuts pulled to the right and the left. I lost lots of time and money as I learned. I was too proud to ask for help. And if you're that proud, the older guys just love watching you fail for the comedic value alone. And add nepotism to that on the loggin' shows because I wasn't from OR/WA....fun times. Kevin
I don't know what saw chain (round or chisel) was used in the eastern parts of the US but where i worked (coos bay, Oregon) the professional cutters were using chisel bit chain when I started in the woods in the 1960's , 404 on the old Mac and Homelites, then, after the Husky and Stihl came out they moved to the 3/8 chisel bit.
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