Originally Posted By: PA24
J.R.B.

Some ribs look like the cut of a small hollow center bit rotating and cutting semi-circles, first cutting one direction then cutting the opposite direction.....I call it drill cut......obviously done on a mill, but looks like a miniature hollow center mill bit was used....?...

I think I read where you were a machinist, so you probably know which mill bit was used....?....

Best,


I would have to see an example of the work to better understand what mill they used but I get your drift. I do a lot of re-sharps in my shop to suit what ever the particular job requires.

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