Castable Sulpho-plastic: epoxy replacement?

[Biopyro]

http://www.make-stuff.com/formulas/sulphpl.html
http://www.instructables.com/id/Super-c ... O-PLASTIC/

Runs like water at 110*C, very low specific heat capacity, metallic properties (conductive) and very strong (easy to add in steel wool for even more strength).

Sounds good to me, and it's also much less expensive than epoxy.

I think it's definitely worth trying, even if only for projectiles, although I wonder if it would be more brittle than a comparable metal.

Edit: Just looked at the prices in more detail - I wish my materials were as cheap as this guy got his! Using high grade materials, it would cost £62 to make 4KG (inc postage and tax). Not cheaper than epoxy, unless you can find somewhere less expensive to get supplies from.
It's actually more expensive than polymorph, so unless you need the highly conductive properties or the water like viscosity, don't bother?