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#2
08-06-2009, 11:01 PM
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| The best way is to lock on and transport them out of there  But if you have a ballnose carbide endmill (say an old one that you don't love anymore  ), you can peck drill a tap out. Do this with a hand fed quill as you need to feel what is going on. Run at 1000 to 2000 rpm, drill only a few thousandths at a time, then blow the dust away.Reason I like a ballnose: it will make a center dimple in a rough, uneven surface and will have a tendency to improve its centeredness as you work. The large radii corners don't damage nearly as easily as a drill's sharp corners.
__________________ First you get good, then you get fast. Then grouchiness sets in. (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)    |
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