Gary,
Keep your eyes open for a set of cutters called Rotabroach. My set goes up
to 7/8" if my memory serves me correctly, but I believe you can get larger
sizes. I got my set from Snap On, who may still carry them.
The Rotabroach is essentially a hole saw that cuts a hole using a donut-like
broach operation. It leaves a very clean hole every time. I learned about
the Rotabroach from helicopter mechanics who suggested I use them when
drilling
panels for avionics. I use my 3/4 broach for drilling holes for NMO mounts
in cars/trucks.
I have had my set now for over 15 years. They do not break or wear out.
Take a look at the manufacturer's website:
_http://www.hougen.com/cutters/cutters_index.html_
(http://www.hougen.com/cutters/cutters_index.html)
Hope this helps...
John Coupe
Coupe Communications, Inc.
WA3BXH
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