Glassing Foam

[icetray Junior Member Find all posts View Profile Close icetray]

I personally have never used it. People generally use pink foam because it very ridgit can be machined and can be hard coated and be rad t make to from. I'm using the white foam cause its less expensive and in general f e its much better to work with. One thing about the white foam is that it melts very easily hence why I'm saying to top coat with plaster or some thing like it to give some surface stiffness

I understand you.
when I worked out the costs, the pink foam is just too expensive overall.
It is ok for small projects.
Does epoxy resin react with White foam?
In few weeks, I will have almost all the samples here.
I will report how the test goes.

[icetray Junior Member Find all posts View Profile Close icetray]

Hi guys, I have finally zeroed in on a technique for giving a protective layer to the foam. Just use a thin sheet of fibreglass and coat it with epoxy resin to form a protective layer. Once this is done, you can use a regular body car body filler to do the finishing work without any problem. I have made few scale models for some clients successfully.

[wbnemo1 Junior Member Find all posts View Profile Close wbnemo1]

Spackle is faster, creates the barrier needed

[jackjhon Junior Member Find all posts View Profile Close jackjhon]

Fiberglass will bond to almost any surface, including wood, foam, metal and even plastic. For applications such as boats, the fiberglass is applied over foam. This is a fairly easy process that involves adding a fiberglass mat bonded together using fiberglass resin.

[Newpack Junior Member Find all posts View Profile Close Newpack]

Packing tape works very well. But it is difficult to wrap a piece of foam with compound curves. But don't leave tape marks in the resin once it's all done.

[JoshRT Active Users Find all posts View Profile Close JoshRT]

You can use an epoxy resin rather than a polyester and don't have to do any prep to the foam. Aero Marine makes some nice products. I used some on my Snark sailboat a few years back.

https://www.aeromarineproducts.com

Good to hear the epoxy resin is recommended here as well. We will try that for my brother's project after we finished installing the suspension from 4Wheelonline on the truck.

[CarbonStar Active Users Find all posts View Profile Close CarbonStar]

There is a russian guy (@Mashinatory) on youtube who makes cars from foam plugs. He is very clever, and uses aluminum tape on top of the foam or plug to lay glass on. I have tried it a few times you worst case will have some strands of foil tape stuck to backside but if you wax the foil beforehand, its pretty fool proof. And after some practice getting a bunch of aluminum tape on compound curves is no issue.