by S.T. Vetrosky
Here's a catamaran you can build by making a female plaster mold and forming hulls with fiberglass and polyester resin.
The hulls for this 14-foot fiberglass detachable catamaran sailboat are made by laying up 3 layers of fiberglass impregnated with polyester resin in a female plaster mold. The fiberglass hulls are approximately 1/8” thick at their sides and somewhat thicker at bottom due to resin sag. The hull decks are made of exterior plywood, coated with polyester resin on both sides. Epoxy resin is used to fasten decks to hulls. The wings are made of plywood and solid fir, screwed and cemented together with epoxy resin. Rudders are of stainless steel sheaths and aluminum blades. Stainless steel springs can be added to hold retracted rudders in raised position. Gemini Cat can be disassembled by removing sixteen 1/4“ bolts which attach hulls to wings. This feature enables one to completely build the boat in a basement, remove the finished parts and assemble outdoors. Also, the boat, when disassembled, can be car topped for transport.
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