Re: Help A Dummy?

Posted by dan hill on April 16, 2007 at 03:17:38 from (205.188.116.14):

In Reply to: Re: Help A Dummy? posted by Gerald J. on April 12, 2007 at 16:18:29:

So called step drilling is hard on drill bits,It puts a high load on a small part of the web and breaks the corners off.I drill 3/4 and 7/8 holes in 1/2 steel with a small drill press.Just drill a starting hole with a 3/8 drill.Just enough to center the big drill.Use the lowest speed and oil.Learn to sharpen your drills..After you have seen big drills turning at 60 rpm cutting out solid curls of steel you will know how to drill steel.

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