I was reviewing some charts I have on tapping speeds, etc. and noticed that
the creator of the cart included information for tapping ceramics and glass.

I can see tapping macninable ceramic or especially "green" ceramic items,
but glass? I suppose it could be done while the glass is semi-molten, but
how else could you tap a hole in glass?!?

Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
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V8013-R