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Doc's Machine- the Mad Scientist of Paintball
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Rotary Broach

To start with, I moved the "floating" part of the holder to the extreme side of it's travel- in other words,
I offset it as much as I could to one side. The slight angle of the spindle will tilt the cutter over to the side,
to the built-in offset will help compensate for that, and keep some of the holder's range of adjustment.

Then, it was a simple matter of setting up the carriage stop so I didn't crash the boring bar into the
bottom of the hole, and then bore it out to 1.125". Straight on, no angle yet. That comes later.

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All text, photos and graphics Copyright 1998- 2015, Doc's Machine & Airsmith Services. All Rights Reserved.
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.