What epoxy can I use over styrofoam?, Working on a 1 piece front end Options

[groot]

So, I'm building up the top of my steel bumper to have it blend smoothly over the hood. This part will be used to pull a mold, which will be used to make a CF 1 piece front end for my race car.

I've got a 2" section of styrofoam on top of the steel bumper and need to attach another 1/2" of foam to it and then seal it up. I have a fiberglass repair kit and the epoxy that came with it just eats the styrofoam.

Any suggestions?

[r_towle]

If you are using pink foam from HD, you need to be looking at using silicone or vinyl adhesive.

If you are using blue foam, it tends to be ok with oil based adhesives.

If you are using true modeling foam from a place like www.foamation.com, you can use resin based adhesives...

It the first two, and quite possibly in the third, I would use sheetrock joint compound on top of it before you try to pull the mold.

My son makes alot of scenery and this is the normal approach...contsruction adhesive workd well also...

The joint compound works perfectly, is easy to shape and does not produce alot of heat during the curing process.

I would use joint compound, then paint and sand and wax it before you try to pull a mold from it.

I got a great book at the local bookstore that is all about working with fiberglass,,,it shows alot of those techniques.

Also, do not use the wifes scissors for the carbon material...whatever scissors you use will be dull very soon after you are cutting the carbon...its just the normal problem with carbon.

Rich