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1st big project, bronze thru-hull

5119 Views 37 Replies 16 Participants Last post by  Minnesail
My first big project on my little boat!

The Catalina 22 was built with a garden-hose style valve glassed directly to the hull for the sink and cockpit drain. I'm replacing it with a bronze thru-hull.

This might be mass overkill for a tiny boat that will be sailing on a tiny lake, but one of my goals with this boat is to learn how to do things The Right Way so I'll have the experience for future, larger boats.

So I've got a printout of Maine Sail's instructions, and a big pile of 1" bronze hardware:

Any tips, tricks, or advice?
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Yeah Minnesail, you do need to fix that. I'd do that as a seachest. For my part, I'd never drill more holes in the boat than I absolutely have to.
I couldn't find any place that sells them. I thought I could save a step and save having to buy a big hole saw if I could buy a pre-shaped backing plate, but although they're in the catalog I couldn't find any website selling them.
There is a fiberglass product I know as 'strong-back' which I believe is 'structural fiberglass' at McMaster-Carr ( you can get that and fabricate a backing plate for yourself. You may be able to buy something like you want at McMaster, whether or not fiberglass
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