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Re: [APD] Re: Drilling tanks

Acrylic. Used them on that. Wood? I don't think it would be
a very good application -- toothless carbide hole saws just
don't clear away enough material to keep cutting without
burning the wood. Even toothed hole saws can be tricky on
wood unless it's doorskin or something similar. As a rule,
it's better to slice or shave wood than to grind it away.
Depending on the size and depth, I'd rather use a forstner
bit on wood. Or a twist drill for most holes about 5/8" or

The glass boring bits you mentioned, and which you have
tested, sound like a good compromise between economy and
effectiveness for boring glass.

Scott H.
--- BAshcraft at BrashearLP_com wrote:
> > Date: Wed, 10 Mar 2004 09:22:31 -0800 (PST)
> > From: "S. Hieber" <shieber at yahoo_com>
> > Subject: Re: [APD] Re: Drilling tanks
> > 
> > You can get even cheaper ones at Home Depot. they're
> fine
> > for acrylic, not so hot for glass. Besides not cutting
> > glass well (thus the need for the carbide) they often
> run
> > pretty far off center and aren't always perpendicular
> to
> > the shaft, both of which tend to create wobble, rough
> > holes, and very tired hands.
> > 
> > You get what you pay for; it's an inexpensive way to
> go.
> The hole saws you buy at home depot are NOT for glass. 
> They are for wood, 
> acrylic and sometimes thin sheetmetal.  Trying to drill
> glass with one of 
> these is guaranteeing a broken tank.

S. Hieber

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