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#1
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You can fiberglass styrofoam but you have to use the correct resin. Styrofoam a.k.a. polystyrene will melt from the styrene monomer in poly/vinyl ester resin. I believe bondo has styrene in it too. If so, then that will not work. If you want to use the standard insulation foam panels from the hardware store you will have to 'glass it with epoxy. Epoxy resin can be used on styrofoam without worry. For the small bit it sounds like you want to do the cost difference should not be much. If you are set on vinyl/poly resin then you will have to get some polyurethane foam (the stuff most surfboards use as a core) I have no idea where to get it in blocks or how good it's insulation properties are.
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#2
07-07-2010, 12:52 PM
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Spanish - any time. Post pics of the project if you can - enquiring minds want to know!
__________________
 1994 Wellcraft V21
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#3
07-07-2010, 03:19 PM
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fishwell and cooler
Yes I will post pics as soon as I can,thanks
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#4
07-13-2010, 06:59 PM
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dont use bondo or anything automotive in a boat...bondo will absorb water and is worthless for structurally glassing anything...its for fairing.....use epoxy to laminate the foam and then use epoxy with microballoons to fair the box and then paint it with 2 part PU paint.
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#5
07-14-2010, 08:40 AM
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Hey SpanishMak - check out my fishing report in the fishing section.
__________________
1994 Wellcraft V21
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#6
07-15-2010, 05:41 AM
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Quote:
What is PU paint?...I'm looking to coat the inside of my cuddy w/something...sounds like a good candidate for that app...
__________________
'74 V-20/ BF 150 '95 V-21/ BF 150 '84 V-20/ 200 2.4 Merc '87 V-20/'18 F150 Yamaha 
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#8
07-15-2010, 08:08 AM
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Here you go detailed instructions working with foam and resin..
http://www.shareaproject.com/pages/i...i,7971,00.html
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#10
07-25-2010, 02:26 PM
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Quote:
__________________
1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer 1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer 1996 V21 w/1993 200HP Mercury on a Shoreline Trailer All towed by a 5.7L Hemi Durango. If God didn't have a purpose for us we wouldn't be here, so Live simply, Love generously, Care deeply, Speak kindly. (Leave the rest to God)  Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
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