How clear does it have to be?
You local toy aeroplane shop will have SOME - get teh stuff used fopr
laminating glass - its nearly clear - a slight reddish tinge usually -
you MUST get slow set stugff or it will get cvery hot and burn on settiong.
If you want really clear stuff for casting stuff in you need an art shop
or a specialist supplier. Google may be your friend here.
Go here and look for west system epoxies
or go here http://rswww.com/ (you have to register) and look up Araldite
20/20 Transparent Epoxy
Or go here;
http://www.resin-supplies.co.uk/Pricelist.htm and look for clear epoxy
so what's it for?
Im creating a fake rock background for a fish tank which requires the
building of the rocks from polystyrene, painting and then coating them
in a couple of coats of epoxy to prevent the paint from altering the
water characteristics/poisoning the fish. Rocks that float!!
Any ideas what sort of paint would be ok for painting polystyrene? Ive
heard that some paints may melt it. I assume a water based paint would
yes, solvent based paints melt polystyrene. I discovered this aged about
12 when painting some strips I had cut to act as hedges for wargaming
with Humbrol enamels.
If I were you I would also check in the aquaria groups about that resin.
You don't want to use something that will kill your fish.
An alternative for want you want to do might be tuffa rocks.
School of Life Sciences, University of Dundee, Scotland
You may need to be a little careful with that one.
Tuffa rock is essentially calcium carbonate. This is OK, and
actually beneficial in a marine aquarium where a highish pH is wanted
(normally a bit over 8). However in a fresh water aquarium, it's
possible with certain environments and fish that an acidic pH is
needed, and tuffa is not going to be compatible with that.
To email, substitute .nospam with .gl
I had never actually heard about tuffa rock before but if its calcium
carbonate it would bring up the hardness of my water and increase the
ph. This isnt really a problem, as my new tank is going to be housing
Malawi Cichlids which need quite hard water (the 12.5dKh/ph8.4 that
comes out of the tap here is excellent for it). I'll stick with the
And ive checked up on the resin, seems that epoxy resin as a whole is
regarded as pretty safe once its cured. I suppose aquatic life wouldnt
live on the bottom of boats covered in the stuff if it wasnt safe.
Thanks for the input
FWIW I made a tiny pilot bust of out blue foam.
I then covered it in tissue paper and thinned PVA. Then gave it a coat
of cellulose (clear dope) that would have caned the polystyrene if it
had got throiugh any cracks - there were none.
Just pva and iiuse/beronw paper to seal the blocks, and then paint with
Layup epoxy is thin enough to brush - and can be thinned while unset wth
cellulose thinners - I'd take a trip to the local model shop.
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