Go to your local hobby store and look at the plastic wire assortments. The
wire is stiff and goes down to some very fine sizes. What I like about it
is that is is stiffer than wax wire. It almost has to be stiffer to be
useful at the finer sizes. Plastic wires will also burn out for casting. I
just burn a little longer than usual. If you use plastics for model work,
you have a lot of new options for models.
TR the Teacher & Student