Hi Joel, I’d run the holesaw in reverse to lightly go through the gelcoat. Once you have a good clean pilot hole, you could start out side and likely finish from outside. Hole saws can be wicked in close quarters, and you don’t want to enlarge your pilot hole before you make your “clean cut”.
2 cents, Lee > On Apr 5, 2017, at 9:20 04AM, Joel Aronson via CnC-List > <cnc-list@cnc-list.com> wrote: > > Tom, > > Dennis helped me with a similar project. Key is to not break the gelcoat! > IIRC, put masking tape over the area on the outside. Drill a small pilot > hold from the inside through the hull. Use your hole saw first from the > inside, drilling 1/2 way through, then drill the rest from the outside. > > Dennis, did I get it right? > > Joel > > On Wed, Apr 5, 2017 at 12:05 PM, Thomas Delaney via CnC-List > <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>> wrote: > Hi listers, > > Thanks, everyone, for your advice on the solar charging system and ACR. Onto > the next project! > > I'm going to be drilling a hole in the hull to install a > well-above-the-waterline thruhull for a bilge pump discharge hose. The > thruhull is 1 1/8" inch, so I'm going to use a 1 1/4" hole saw drill bit. I'm > going to seal it with 3m 4200. Does this plan make sense? Are there any > surprises to expect? > > Thanks, > Tom > > --- > Snow Goose > C&C 35 Mk I > City Island, NY > > > _______________________________________________ > > This list is supported by the generous donations of our members. If you wish > to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray <https://www.paypal.me/stumurray> > > All Contributions are greatly appreciated! > > > > > -- > Joel > 301 541 8551 > _______________________________________________ > > This list is supported by the generous donations of our members. If you wish > to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated!
_______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
