I drilled mine out a bit, and pushed some thickened epoxy in, and got some SS Helicoils.
I put a bit of Tefgel on the 10-24 machine screws, screwed them into the Helicoils, and then pushed that into the hole. They should stay in place if you have the epoxy thickened enough. Worked great. Bill Coleman Erie PA From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of CHARLES SCHEAFFER via CnC-List Sent: Wednesday, June 24, 2020 3:51 PM To: CNC boat owners, cnc-list Cc: CHARLES SCHEAFFER Subject: Stus-List installing plastic anchors in fiberglass Hi Guys, The fiberglass sea good that covers the cabintop window and companionway slider on my 34R is attached with a dozen #8 x 1" wood screws. The holes for these screws penetrate the balsa core of the cabintop and were sealed with white caulk. There is no way to through bolt it. I'm planning to overdrill the holes to 3/4" and fill with Thixo flexible epoxy and then drill the holes to 1/4" to take plastic masonry anchors. The SS wood screws will like these anchors, be removable and the core will be better protected from water penetration. I'm trying to decide between using plastic masonry anchors made for wood screws, or screw in threaded fittings and use machine screws. Or maybe I should drill and tap the epoxy and use machine screws? Any better ideas? Masonry anchors: https://www.kimballmidwest.com/All-Products/Fasteners/Anchors/Tubular-Screw-Anchors/483072 Threaded fittings: https://www.grainger.com/category/fasteners/thread-insert/self-locking-inserts?cm_sp=Product_Details-_-Categories_Based_on_Your_Search-_-IDPPLACAT Thanks, Chuck Scheaffer Resolute 1989 C&C 34R, Pasadena Md
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