Anyone know of a good polystyrene glue, the one at coast foam costs $20.00 for 500ml and I would need about 3 of them. I don't want to use epoxy resin because when you are shaping, the foam tears out. Has anyone tried liquid nails.

Clarky

What are you gluing together?

The secret to gluing styro foam together with epoxy resin, is to wipe the resin to both sides that are to be joined, then wipe all of the epoxy off. This leaves a thin film that is real easy to shape. Afterall epoxy is a superior glue, unlike polyester.
I also put into the mix a TINY bit of thixotrope, EG cabosil or R2O2, this makes the resin a bit like vaseline.
PVA glues don't work as the water base does not get absorbed, it just dries out at the edges and when you shape the joint falls apart.

If there any gaps after gluing with epoxy, the seal coat usually fills them.

Rod

The trouble with microspheres and Qcells are that they are glass balloons and harder more brittle than epoxy resin. They also take the smeariness out of the resin, sort of dry it out. The reverse happens with cabosil.

Rod

Hi all

Thanks for the replies, I'll probably go with epoxy resin. Will keep you posted with the project.

Clarky

Hey Stuey

I ended up using a type of contact, especially designed for polystyrene foam.