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Now, you could, at this point, leave the knob smooth, or even
knurl it. I wanted some coarse vertical grooves, so I got out the
5C Hex block. Using a 1" 5C collet (the reason for the 1" section)
I clamped the knob blank and stood the whole mess up in the mill vise.

You can see the vise stop on the rear jaw- this is so the collet block can be
removed and replaced, and quickly returned very close to the same position.





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Information contained in these pages is for reference and entertainment purposes only.  Our methods are not always the best,
quickest, safest, or even the correct ones. It's up to you to know how to use your own machines and tools.
Keep your fingers away from the spinny blades o' death and you should be all right.