It is pretty amazing stuff, and, even though it was my first time using it, the results will suit my needs.
Here's some shots of the cast made from the mold
and the cast supporting the suiting material (as part of a future sculpture).
-- Yes, I still need to patch the hole created in the mold by my decision to retain my neck during the molding process.
A few lessons learned
- Save a little bit of the unmixed Body Double for use after molding. It can be used to repair any tears (unlikely) or bare spots (more likely) in the mold. Given that you'll be doing a few coats of resin without fiberglass, the chances of the casting material bonding to the support are otherwise substantial.
- The silicone is slippery (especially when treated so as to not stick to hair), so first use a few layers of resin/hardener alone without fiberglass to get detail. Without this, the fiberglass won't adhere well enough to the mold to track the shape, even if it doesn't fall off the mold entirely.
- Trim hair -- this reduces the pain and increases the speed of removing the mold from one's body, but also improves the achievable level of detail.
- Mold in sections. This mold was done standing. In retrospect I would have done the front and back separately while lying down, followed by the arm while standing.
Body Double very much doesn't want to stick to your skin. Positioning yourself to allow gravity to hold it in place will increase the overall accuracy and level of detail.
- Don't breathe too deeply -- it will make you look fat!