As far as polymers stand, epoxy is not the worst for getting on the skin - but it's not the best. It's not very bad for fumes compared to polymers with styrene in them ... polyester can make your eyes water, and two-part polyurethane contains a proven carcinogen called isocyanate. Nasty stuff.
Hence the gloves for kneading the epoxy.
A little bit is cut off. The stuff in the middle is the hardener, or it might be the stuff on the outside - the one that smalls of cat piss is the hardener - I'm sure it's the darker stuff.
So it's kneaded until a uniform colour and then smudged in. It can be routed but I'll just hit it with the dremel's sanding drum.
