"Jim Wilkins" wrote in message ...

One file stroke per tooth is quick and gives a noticeable improvement.
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If filing the 30 degree top of the tooth proves to be effective and
acceptable to the resharpening shop, the guide could be similar to the
Husqvarna roller guide which indexes solidly on the chain. I begin
problem-solving with complex solutions but often end up with simple ones.

https://www.firewood-for-life.com/hu...-file-kit.html