19th March 11:01
dealing with foam
If you are talking styrofam, I use tow or three types.
(i) White glue - PVA - works pretty well for things like laminating
slabs together, and at a pinch can be used for skinning if you can ke[p
an even pressure on teh whole shebang for a few hours. PVA is ideal for
skinning with paper - tissue or brown.
(ii) General work of joining other things to it I tend to use epoxy. If
you mix this with microballons its a lot lighter, and still stronger
then the foam anyway.
(iii) I have experimented with contact adhesives - there is a rubbery
adhesive (Copydex?) that smells of amonnia, and is often used to stick
fabrc to wood etc. It works - or can work - as a contact glue, and so is
useful for rapid skinning of the stuff.
(iv) I haven't used it, but there are some water based polyurethane
glues out there that allegeldly work well also.
MOST CA's attack the stuff badly. As do most solvent based glues.