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Discussion Starter #1
So I have a couple spare gen 3 hoods lying around in my garage, and I though I might as well have some fun playing around with some fiberglass. I need to find that foam people use as a mold to get complex fiberglass shapes. Does anyone know what kind of foam it is exactly and where I could buy some? Thanks.
 

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Don't Be Stupid
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Some use "Great Foam". That expandable crap you use to fill holes in your house.
 

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Don't use expandable foam, it's too hard, and has way too many air gaps.

Daniel, go to Home Depot or Lowes, and go into the insulation department. They sell a hard foam in sheets, that's green in color. It's used for insulation on houses with block walls. I've used that before, and it works great as a mold.

After you've shaped it and put the fiberglass mesh/resin in many layers, and you've got enough strength, use a knife and a rasp to get rid of the bulk of the foam, then use some turpentine to dissolve what's left of the foam.

JR
 

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Discussion Starter #5
Wouldn't you know it, I turned on Spike TV's PowerBlock for the first time in months and Muscle Car is on and they're making fiberglass body panels. They used the green foam for flower arrangements; I'll see if the local Micheal's hobby store has some.
 

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michelle
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JR's got it right. That's typically what we use for the racecar when making little things, like the air box. That foam works great for it.
 

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That's what you use. Remember that you'll need to put some wood glue over the foam as the resin will eat into it.
 
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