How to Drill a Hole in a Copper Tube | eHow
2020-2-24 · To do this you need to open the chuck, slip the drill bit into place, and then tighten the jaws of the chuck with the key. Make sure that you remove the chuck key after you’ve tightened things up, otherwise, this can fly out when you start the drill press up. Step 3. For the fourth step, is you should gauge the depth.
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