i have been painting oils over acrylics. everything looks great for a few days, but then the oil paint seems to be fading, losing the initial luster. three concerns i have are:
1. i may be using too much thinner.
2. i should put a final coat of something over the figure after completion with the oils.
3. i should be priming the figure as opposed to painting directly onto the super sculpey (or the magic-sculpt).

has anyone had this problem before?

I noticed oils losing their sheen after quick-drying in the drybox... I guess the bulb was giving too much heat and the oils ended up drying very fast but also to a very flat finish.

There are many more experienced people on this site, so hopefully they will notice this tread and reply.

Mario

I've been using oils for figure painting for years, so hopefully I can help.

Always prime the figure first! whatever the base material.
I personally always undercoat with the base colour using enamel or acrylic, eg: flesh tone for faces; then paint thinned oils over the top blending wet-on-wet to get the final result
As most figure painters are looking for a flat finish, then force drying under a moderate heat source will help to achieve this, if you want a lustre finish then let the paint dry naturally or use less thinner (this can leave more visible brush strokes though!)

thanks for the help, guys. i'll give this a try as well as keep reading posts and out of books. one of the problems i have had with primers is that i was using a spray -on, and it always left bumps/bubbles - i'm probably going to look for a brush-on primer and try to use less thinner - maybe i'll have better success next time