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Chain Sharpening
Are FOP really progressive depth raker generators?
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<blockquote data-quote="BobL" data-source="post: 1816857" data-attributes="member: 14206"><p>It's absolutely warranted. </p><p></p><p>On a new 3/8 chain the gullet is ~0.25" wide, a 0.025" raker depth then translates into a 6º cutting angle.</p><p></p><p>When the gullet width reaches 0.5" a 0.025" raker depth translates into a cutting angle of 2.9º, that means the cutter will take an initial bite of only half the amount of wood and make a lot more powder than chips.</p><p></p><p>In practice the chain will cut more than half but it will not cut as fast as if the cutting angle is maintained at 6º.</p></blockquote><p></p>
[QUOTE="BobL, post: 1816857, member: 14206"] It's absolutely warranted. On a new 3/8 chain the gullet is ~0.25" wide, a 0.025" raker depth then translates into a 6º cutting angle. When the gullet width reaches 0.5" a 0.025" raker depth translates into a cutting angle of 2.9º, that means the cutter will take an initial bite of only half the amount of wood and make a lot more powder than chips. In practice the chain will cut more than half but it will not cut as fast as if the cutting angle is maintained at 6º. [/QUOTE]
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