Living For Sailvideo
The Trouble With Deck Prisms... Part Two | E041
2 February 2025 · 28 min · 10K views
What this video covers
To fabricate custom fiberglass housings for deck prisms on the 30-foot sailboat Antidote, the owner constructs a mold using a glass prism and trim ring as a plug.0:06 He coats the mold with Duratec 707 polyester primer to create a smooth, sandable surface, applying it with a spray gun powered by an 80-gallon, two-stage air compressor.1:05 After addressing surface pinholes with spot repairs, he applies four layers of Partall No.12:26 2 paste wax followed by a PVA release agent.16:51 The layup process uses 12-ounce fiberglass tape and milled fibers for tight corners, initially attempted with polyester resin.20:15 Vacuum bagging fails to adequately compact the fiberglass into the complex geometry, resulting in voids and poor adhesion.23:33 The owner concludes that the polyester resin’s short open window and the chosen fiberglass weight are unsuitable for this application, suggesting that epoxy resin or a vacuum infusion process would yield better results.24:22
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