Hi,
I'll ask on another forum where I know a few Polish sculptors to be hanging around. I'll get back to you if they can help.
As to do it yourself epoxy putties, do keep in mind that there is a lot of variation in quality and not all of them are suitable for surface sculpting. Some are close to sculpting putties like Milliput (Nural 34 has been used succesfully for 28mm sculpting) while others are useless. For instance since they are not fine enough, too fast curing, etc, etc.
y_wong. What brand is the hardware putty you're using? I'm maintaining a list of putty suppliers for another group and it's always good to add alternatives like the one you're using (WIPs look good: nice job on drapery).
Jools_jl, what size do you want to sculpt in?
Bye, Ming-Hua