Help with foam

Mars - 1 · Post by **Mars - 1** » Sat Feb 13, 2010 1:55 pm

I'm getting ready to start a project using foam for the basic shape. What do I coat the foam with for a base for adding details and painting?

Kolschey · Post by **Kolschey** » Sat Feb 13, 2010 4:28 pm

When you say foam, do you mean that you are using blue foam blocks that you've carved, or foam core board cut and glued to form shapes?

Lt. Z0mBe · Post by **Lt. Z0mBe** » Sun Feb 14, 2010 1:45 am

If you're talking styrofoam, like the pink or blue insulation or the white packing blocks, I use three things.

1. Hot wire cutter
2.. Old, fine toothed razor saw
3. Olfa straight blade, "snap off" knife. I can extend it out as long as necessary to carry planes across areas I need.

Most fine sculpting, though, I do with files, some custom sanding blocks and X-Actos.

Then it's time for Aves.

Kenny

modelnutz · Post by **modelnutz** » Sun Feb 14, 2010 2:00 am

If you have any troubles getting the Aves to stick to the foam...try a thin coating of 5 min. epoxy....let it cure...then apply the Aves.
Helps the putty stay in place real well.

Captain Riker · Post by **Captain Riker** » Sun Sep 05, 2010 9:41 pm

Wouldn't it just be easier to cover it with Sheet Styrene (unless the shape was curved or spherical?)

Umi_Ryuzuki · Post by **Umi_Ryuzuki** » Mon Sep 06, 2010 5:36 pm

A layer of general epoxy, or West Systems epoxy and fiberglass.

http://www.rcgroups.com/forums/attachme ... tid=937715

5-45 minute epoxy is a bit fast...

AbsoluteSciFi · Post by **AbsoluteSciFi** » Sun May 15, 2011 6:29 pm

Umi_Ryuzuki wrote:A layer of general epoxy, or West Systems epoxy and fiberglass.

http://www.rcgroups.com/forums/attachme ... tid=937715

5-45 minute epoxy is a bit fast...

Depending on the foam... is this foam insulation pink foam? If so- the epoxy will melt it down, just like spray paint would. There you need wood glue, then resin. If it is hard urethane foam, then coat with epoxy and resin.