I've been trying my hand at sculpting and casting recently for the first time. One mini I've always wanted was a fireball-like plasma torp, so I decided to give it a try. I used some of my kids toy jewelry as a base and worked from there. They are mounted on Litko flight stands with 1/8" diam. magnets. Flames are sculpted with milliput.
I'm letting the two-part mold set as I type and will try to cast them sometime this week. Let me know what you think. Thanks!
Molding disaster has struck!?! I didn't put mold release on the mini and the silicon rubber firmly attached to the porous clay sculpted fire. I pretty much ruined the mold and mini trying to get the stuff off. Back to the drawing board...
Success! I finally resculpted my fireball plasma torps and successfully created a mold, this time using liberal amount of mold release in the process . I have been able to cast about 15 of each size with only one miscast. I'm going to try and find some time to paint some soon and will post pics.
I can't answer for Dr Tachyon, but one of the best walk-throughs of mold-making that I've ever seen is currently underway on this gent's YouTube channel: http://www.youtube.com/user/darkuboot?feature=watch
(He's building a full-size filming miniature, but mold-making is mold-making and stuff like mold-release sprays, etc., are universal.)
He starts making the mold in video Clipper Build 16 (or thereabouts).