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pCAT mod


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Mine were already done by the time I got them. But, I would not go straight to 1/4" bit right off the bat. I would certainly run at least one smaller size pilot hole first, maybe like 1/8". Just a thought.

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I like to use a #2 centering drill for pilot holes on stainless. Centering drills have a large shank and a smaller point and are less likely to flex and break. Turn the bit rather slowly, applying pressure so that a continuous chip curls out of the hole. Run the 1/4 " drill more slowly than the smaller drill. Don't run the drills at high speed, only fast enough to shave the metal. If you run the drill too fast you may wind up hardening the stainless, making it very difficult to make a hole. Use a drill press or vertical mill if possible.

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