RE: Toroids from Foam

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Mike Wood by way of Terry Fritz <twftesla-at-qwest-dot-net>" <mike.wood-at-opennw-dot-com>


Hi Steve

following on from this sound advice about testing adhesives and paints and
stuff - if you're using anything like PVA glue (white woodworking
glue/Elmers(?)) then it won't attack the foam because it's water-based, but
you do need to make sure it's completely dry before covering the toroid.
The water can sometimes eat your covering - I rushed one of mine once when
trying to cover the form with aluminium foil, and ended up with little holes
in the foil after a while where the water had eaten its way through.  You
might be safer with foil tape but it would still be a shame if it made it
lift or bubble.

I've tried painting shaped foam toroids before covering as well - just with
plain acrylic undercoat or something, and it seemed to work quite well in
flattening the fuzz caused by sanding, and gives a smoother surface for
sticking the covering on.

cheers

Mike
Wellington, NZ




Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi Steve,

Just a tip.

Be sure to test any paints, glues, or other chemicals first on a scrape
piece of foam.  Many such chemicals will attack and melt Styrofoam into a
gooey blob!

Cheers,

	Terry


>