We are doing this today on Calypso. I concur with Pat's advice, and in the last 6 weeks have filled 15 to 20 old hardware mounting holes basically the same way. We do chamfer the top and bottom of the hole to give the filled epoxy some extra resistance to movement.
The West Six10 has worked very well (read the Six10 FAQ and watch the video at West's web site). We also mix West 105 resin and 205 hardener with Cabosil and Milled Glass Fiber to make our own thicken epoxy filler. The Cabosil thickens to help prevent sagging, the MGF add strength. Calypso's rope clutch teak block spacer has been sealed and has the bolt holes chamfered to give more sealant surface area to act like an O-ring. We made our own backing plates from 2 thin pieces of G10 fiberboard (top and bottom for a flat surface) with a thick layer of Bi-axial fiberglass cloth and West Epoxy in between. The cured lay up is a stiff as a thicker aluminum plate. Martin Calypso 1970 C&C 43 Seattle ________________________________ From: CnC-List [mailto:[email protected]] On Behalf Of Pat Nevitt Sent: Wednesday, March 13, 2013 10:24 AM To: [email protected] Subject: Re: Stus-List Filling holes in deck/mounting new clutches Joel, When I did mine, I over-drilled the holes and then used the bent tip of a nail to widen the area between the glass even more, then it was filled with West Six10 epoxy. When that dried, I redrilled holes. This way you never have to worry about water getting into the core. Just be careful that you are gently with the drill when doing the new holes and don't break the epoxy. Then put butyl tape to the base of the clutch and you are all set. Pat On Wed, Mar 13, 2013 at 1:04 PM, Joel Aronson <[email protected]<mailto:[email protected]>> wrote: I'm planning to replace a set of clutches this weekend. The old ones are mounted on teak blocks and bolted with 1/4 inch bolts and backing plates. The holes were drilled right through the core with no epoxy. There does not seem to be any water intrusion, as the bottom of the teak block was covered in a sealant. What is the best way/material to fill the old holes? A tube of 4200? Should I enlarge the holes before filling them? For the new clutches, is butyl rubber the way to go or would you over-drill and fill with epoxy? -- Joel 301 541 8551<tel:301%20541%208551> _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com [email protected]<mailto:[email protected]>
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