very cool. I've been looking for something to sculpt details like metal and smooth surfaces. I have magic sculpt, but its very hard to work with so i tend to use it for blocking rather than anything final. kneadatite is my usual go to but its pretty awfully expensive to do anything large with.
No i haven't, I'd like to give it a try but I dont have any good quality casting equipment and everything I've made has been for my own enjoyment or for use as a gaming figure. I know the sculpting wax you use is pretty resilient, but I dont think it would hold up to the rigors of a tabletop.
kneadatite (commonly refered to as "green stuff") is very common in the table top wargaming community. Its a two part epoxy resin similar to apoxie sculpt but a little more rubbery in texture.
it still has a slightly rubbery texture, with a decent amount of flexibility, you can drill, carve, and sand it reasonably well. Its my preferred thing for modifying action figures since it self hardens without needing heat like sculpy. Its worth noting that its extremely sticky (invented as a patch for ship hulls as memory serves) and therefore you need to lubricate your tools in some way. Some people use a blend of Water based lubricant (ky personal lube) and water. I find that licking your tools, since saliva works better and evaporates without residue, before working something is far more convenient (it is non toxic).