Quote:
Originally Posted by H-Rod
All the round holes I drilled in my car were with a holesaw spun in reverse.
Drill your pilot hole (in reverse) then use that as a guide for the drill in the hole saw.
I also laid down some painters tape while I did this.
No chipping, cracking or anything.
If you think drilling for the hood latches is a booger, wait til you drill for the roll bar.
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Reverse is okay for high speed steel hole saws, but not for carbide-tipped - they may survive that in fiberglass, but the carbide tips are designed and attached only for conventional drilling and could be ripped off if run in reverse.
Personally I wouldn't do it with carbide-tipped hole saws. Just my 2¢.