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01.16.2007, 02:24 PM
If you need the bottoming, then yes. If you don't need the bottoming, but if you want to make thru holes, you can better use a taper or a plug tap.
If you go in the material with a bottoming tap, the tap will break easier. but if you use a taper /plug tap first (or both) the tap will break less quick.. Get it?
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