Sometimes, if you're lucky, you can install two hole saws on the same mandrel. One the size of the existing hole as a guide and a second one the size of the hole you want to drill. Otherwise, use Chuck's method.
-- Dennis C. Touche' 35-1 #83 Mandeville, LA On Mon, Feb 20, 2023 at 11:38 AM CHARLES SCHEAFFER via CnC-List < cnc-list@cnc-list.com> wrote: > > > The tricky part for me was caused by the newer sleeves being a size > larger, so a friend gave me a tip. You find a holesaw the same size as the > exiting hole and drill through some wood to make a pilot guide the same > size as the hole you want to enlarge. Then you put the wood plug you made > onto the pilot bit of the larger holesaw pilot bit, and it will keep the > bigger holesaw centered and Bob's Your Uncle, you're all set. > > Good luck. Let us know how you make out. > > Chuck Scheaffer 1989 C&C 34R, Annapolis >
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