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686 Chain Sharpening

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So I have done a rare thing and read a set of instructions and wished I hadn't. The instructions say first file with a 4.8mm file and then a 4.5mm file and file 10deg of the level and at 25 deg.

I have no probs with the 25 degrees bit but using two different size files and 10 deg of the level sounds a bit different to me, what do you think?

686 Chain Sharpening.pdf

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So I have done a rare thing and read a set of instructions and wished I hadn't. The instructions say first file with a 4.8mm file and then a 4.5mm file and file 10deg of the level and at 25 deg.

I have no probs with the 25 degrees bit but using two different size files and 10 deg of the level sounds a bit different to me, what do you think?

 

Stop reading now :thumbup:

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4.8 when chain is new and when it gets to about half left step down to 4.5 . as the top plate edge moves toward the back of the cutter it slopes down so ideally you would need a slightly smaller file to bereally religious about it .

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Several Oregon chains are 25 degree and 10 degree and are made for Dolmar and Husky.

 

eg Husky H42 = Dolmar 099 = Oregon 73LPX

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Thanks CJ

Problem is, I use a sharpening jig and I don't think it will allow for that 10 degree offset. Don't have it beside me to say for sure.

How important is the 10 degree offset?

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I kinda do 10 degrees down buy hand on Husky and Oregon chains and level on Stihl chains but it dosn't matter a toss really .

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