Thread: Drilling Canopy
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Old 02-27-2017, 07:30 PM
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 7,515
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Quote:
Originally Posted by mrhorspwr View Post
As far as using the #40 pilot first. It is dangerous because when u drill the hole up to size, the bit will try to pull itself through to quickly and blow out the back.
That's why it is a good idea to use plexy drill bits (instead of a regular one run into concrete), They cut with zero rake, and wont pull themselves through.
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Scott McDaniels
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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