Martin, Where did you get the epoxy board? Mike Virginia Lee 1978 C&C 36 CB Virginia Beach
Sent from my iPad Mini > On May 3, 2014, at 9:01, Martin DeYoung via CnC-List <cnc-list@cnc-list.com> > wrote: > > Calypso’s new backing plates (replacing 43 year old aluminum) are 2 layers of > .030 epoxy board with a thick layer of glass cloth and epoxy in the middle. > They sand and paint like fiberglass and will not corrode. We are filling and > back drilling the hardware mounting holes so the risk of crushing the deck > core is limited and the backing plates are a back-up. > > We used .030 GR4 epoxy board because the company I work at had a bunch left > over from a project and I was able to requisition it. The mid layer of glass > cloth is an easy way to add thickness and strength. We are able to make > custom shapes and thicknesses. We shape the edges much like Dennis describes > below. > > Martin > Calypso > 1971 C&C 43 > Seattle > > From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Dennis C. > via CnC-List > Sent: Friday, May 02, 2014 3:12 PM > To: CnClist > Subject: Stus-List Making a winch backing plate > > Just thought I'd share my current project. > > I'm repairing a boat with a ripped off cabin top winch. The winch was > mounted on a pad molded in the deck. Molded in the deck under the pad was an > aluminum disc. The winch fasteners were tapped into the disc. The cabin > liner was immediately under that. The winch, pad and disc all separated from > the deck. > > Since there was no access to the underside of the pad, there was no easy way > to get beneath the pad and add structure for strength. The plan was to clean > up the pad, re-attach it with epoxy. Simply epoxying the pad down would have > very little strength so the winch needs to be through bolted. (Of course a > minor gelcoat repair is required to cosmetically finish the pad.) > > Since the backing plate will be visible from the cabin, it needs to be nice. > > Anyway, I ordered a couple of pieces of 1/4 inch aluminum plate on eBay. > (You can find cut scraps fairly cheap there.) I used my Bosch jigsaw with a > metal cutting blade to size the pad and rough trim the corners. Then I > shaped the corners with a belt sander with 80 grit and then finished all the > edges with the belt sander and 120 grit. The edges were hand sanded with 320 > grit. The exposed flat surface was hand sanded with 1000 grit wet/dry then > polished with a buffing wheel and polishing compound. Looks nice!! > > Whole process took about 30-40 minutes. The winch will be re-installed with > washers, lock washers and cap nuts for a nice finished look. > > Dennis C. > Touche' 35-1 #83 > Mandeville, LA > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com
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