If epoxy resin will work, it can be colored with a variety of
household items, including (but not limited to): talc, spices &
herbs, mostly dried stuff but also effective is the water color paint
from tubes. Just get the slightly longer setting epoxy so you will
have time to mix in your experiments. This was passed onto me by
Karen Christians, Metalwerx. Also, the epoxy should come in separate
bottles, rather than the duo injector style. The injector is too
futzy about getting an equal amount of epoxy and catalyst & is also
usually short setting type. Karen’s class let imagination take over &
made samples of mixtures (with notes of course!) on some stiff card.
The dried epoxy can be sanded level if necessary, but you will get a
matte finish rather than a shiny one.
The suggestion concerning enamel: If you meant vitreous enamel,
which is glass, it has all the strength and weaknesses of glass. To
fuse to metal it must be exposed to very high temperatures (1400F or
more, up to 1000C). If you try embedding stuff in molten
glass–well, there are many problems to overcome. I am not speaking
as a lampworker, (bead maker), I don’t know how to do that. I have
semi-successfully embedded fine silver in glass, but it will usually
break down at the interface between the metal edge & the glass
foundation. I mean that I left the surface of the fine silver
exposed above the glass. A different technique from cloisonnE9 or
champleve or completely covering metal foils or even bits of
cloisonnE9 wire. Working on my own, everything I do is an
"experiment" LOL ;-).
Rio Grande sells colored epoxy resin. Trade names are Colores and
Durenamel. Never having used either, I can’t speak for or against
them. You would get repeatable results with a system, where you might
not doing the “fly by night” additives to epoxy.
Snow Goose Designs, Metal & Enamel Art