Use a good quality hole saw - if there is a pre-existing hole that you are trying to make larger you can drive a wooden plug into the existing hole and then use the hole saw. If you don't have a hole saw that size you can use a rotary tool like a roto zip or a jig saw. But for the best fit and finish you can't beat a hole saw.
Dave C27 #5212 Windabout Cape Cod, MA http://dpbcc.home.comcast.net -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of John Oppenheimer Sent: Sunday, November 19, 2006 4:52 PM To: [email protected] Subject: catalina27-talk: How to cut a 3 1/2 inch instrument hole How does one cut a 3 1/2 inch instrument hole into a fiberglass bulkhead? It's a very common process but I've never seen it done. John C27 5956 Cool Change Austin, TX
