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Help on drilling a chainsaw bar


AndyChalmers
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If you measure the diameter of the roller sprocket to the outside. Then mark the bar where the sprocket comes to. Then, you want to be at least 15mm back from this mark to your hole centre if you are drilling a 10mm hole. This means that if there is any swarf or jagged edges inside, then they wont foul the sprocket. There are usually some little indentations around here where they have pressed the laminates together, it is OK to drill through these.

 

I have done loads when we make the mills. Just take your time, drill nice and slow with plenty of lube, start with a small hole and work your way up.

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