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<P>To late Steve, I end up doing it with liquid latex rubber, 30 coats of it, my wife hair dryer did some overtime, the tricky part was the second and third coat</P>
<P>Thanks anyway, Marc..<BR><BR></P><BR><BR><BR>>From: "Bubba" <mysticz28@swbell.net><BR>>Reply-To: Simulator Cockpit tech list <simpits-tech@simpits.org><BR>>To: "Simulator Cockpit tech list" <simpits-tech@simpits.org><BR>>Subject: Re: [simpits-tech] I need to make some parts out of<BR>>Date: Wed, 22 Jun 2005 00:52:58 -0500<BR>><BR>>Marc Quintin wrote:<BR>>>Fiber glass, the parts have a irregular top of a 1/2 boxe kind of<BR>>>shape 10''X9''X1'', one side at 2''. So I'm in the process of <BR>>>making<BR>>>a mold but I'm not sure what to use, I was thinking of fiber <BR>>>glass,<BR>>>plaster of paris or latex. I would prefer latex but I'm not sure <BR>>>how<BR>>>it will react during the curing process of the polyester resin<BR>><BR>>Ok, I'll get off my butt and
answer.<BR>><BR>>First, which side is the good side? Inside or out? Do the corners <BR>>have to be sharp? Is it structural?<BR>><BR>>2 ways to do it, off the top of my head:<BR>><BR>>1- Make a male plug out of, say, 1/4" MDF glued with Probond, sanded <BR>>smooth (and then sanded some more), and seal it with a few coats of <BR>>polyurethane, sanded until you can't take it anymore, and polished <BR>>with a dozen coats of car wax. You'll need a couple of degrees of <BR>>draft on the sides to get the part off the plug and building in a <BR>>hose nipple in the middle of the big side wouldn't hurt. Seal the <BR>>nipple with a piece of thin tape, lay up the glass, and hope it <BR>>sticks to the mold. If it won't stick down to the sides try laying <BR>>it up then putting the plug on the floor, cover it with a garbage <BR>>bag, then fill the bag
with about 10 gallons of water to force the <BR>>bag against the mold, trapping the glass in the middle.<BR>><BR>>2- Make a female mold, basically as above, and use the water bag <BR>>trick.<BR>><BR>>If you wanted to get really nuts you could build both a male and <BR>>female mold with about .075" between them, fill the mold with dry <BR>>glass, and inject resin into the middle of it (resin transfer <BR>>molding).<BR>>--<BR>>Steve<BR>>mysticz28@swbell.net<BR>>He who seeks will find, and he who knocks will be let in.<BR>><BR>><BR>>_______________________________________________<BR>>Simpits-tech mailing list<BR>>Simpits-tech@simpits.org<BR>>http://www.simpits.org/mailman/listinfo/simpits-tech<BR>>To unsubscribe, please see the instructions at the bottom of the <BR>>above page. Thanks!<BR></DIV></div><br
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