Doug Cimperman wrote:

1) A drill press w/vise will work far better
than a hand drill. If you use a hand drill
in thicker (1mm) metal, the bits will go
dull really fast and tend to break as they
come out the back side of the hole.

Drill bits, is there a reason to use those
instead of just drills (round)?

2) there are tap/drill charts online that
tell you what hole size is needed for
which tap size.

Yes, I have the table on virtually every
calipers and ruler I have...

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underground experts united
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