Styrofoam mold made, now what?

**jnye6625** · 08-11-2005, 11:49 PM

I've been doing a lot of a reading lately about fiberglassing, but I am stuck. I went to menards and bought a sheet of 2 inch pink owens corning foam insulation and glued it together with foam caulking. Then i sculpted the foam how i wanted it and now im stuck. Do I absolutely have to bondo this first? Or can i just put fiberglasson it how it is? If in fact i can just put fiberglass right on the foam, how do i do the final prep work so its all smooth? Does anyone have any reccommendations on what I can use as a relase? Any help would be greatly appreciated.

**etown** · 08-12-2005, 12:30 AM

Fiberglass straight to the foam. When it's all cured you just melt the foam away with thinner, then bondo for a nice smooth surface.

**91silvy** · 08-12-2005, 12:36 AM

Do NOT fiberglass directly to the foam. The resin will eat through the foam ruining your nice sculpting work. Put a nicer layer of painters tape over the foam so the resin can not get through.

**WeDgE** · 08-12-2005, 01:05 AM

Also, put Vaseline on top of the painter's tape so you can easily remove the mold from the foam afterwards.

**seanz0rz** · 08-12-2005, 01:54 AM

http://www.buildyouridea.com/foundry...oam_howto.html

you could always do that^^^ (something ive been thinking about doing for my dash. would require alot of Al, and a lot of venting)

seriously tho, using that drywall texture mentioned above has worked great for me when doing molds for fiberglass. and vaseline works well too.

**xdjxklusivex** · 08-12-2005, 03:16 AM

yeah dude hes right put some tape and tin foil over the foam so it will hold its shape and not melt with the resen... and yeah vassaline works or car wax the bottle kind not the can kind...

**jnye6625** · 08-12-2005, 08:04 AM

If I dont care to ever use the mold again can i just put painters tape and then melt the foam with thinner and peel the tape off from the inside? I will most likely be fiberglassing this evening. Any more hints or cautions would be great. Thanks!

**xdjxklusivex** · 08-12-2005, 01:56 PM

well why would u go the hard way and melt the foam with thinner whe nu can just pop the mold lol and if u mess up bonding or it cracks or wahteve u can use that mold to start over insted of emaking the styrofome

**Altimat** · 08-12-2005, 08:41 PM

You can seal the foam with latex paint. Resin won't dissolve that.

**jnye6625** · 08-15-2005, 05:00 PM

I finally finised my fiberglass housing for my screen, and now I need a good glue to fix it to my dash peice. Does anyone have any suggestions on what to use for this? It would be nice if i could also use the glue to feather the fiberglass housing to the dash so it has a finished look. Any suggestions are greatly appreciated. Thanks!