I made my first Jenny mold almost a year ago after sculpting her head and torso. I knew virtually nothing about puppet construction back then and realized soon enough that this mold wouldnt cut it. So I started sculpting what I dubbed 'Jenny 2', still in-progress. My plan is to mold the Jenny 2 body, cast in foam latex, and use replaceable foam heads cast from the first Jenny mold. I thought I'd resculpt the head, so Jenny 2 would be all in one piece, but she wouldn't fit in my toaster oven, so I'll have to do the head separately.
Today I took the first mold and tried casting her in foam. The mold is just basic plaster of paris and I wasn't sure if it would hold up, so I made a few solid rubber latex heads first, just in case. The Jenny head you've been seeing was cast in solid rubber latex, very heavy but not completely unusable.
I followed the same GM Foam formula as last time, the 'textbook' measurements and times for mixing, and had a second successful foam run. It was warm today, and I did notice the foam getting thicker, faster. I was sure it was going to gel in the mixing bowl but it didn't. It was actually so thick by the end of the cycle that the bowl wouldn't turn on its own, I had to manually spin it.
The plaster mold suffered a few cracks, none interfering with the head, so I think I'll do some repairs and try a second foam casting of the head. This one didn't turn out so great....

I had so many air bubbles in the Tree Beast that I overcompensated when pouring the latex into the mold this time. I hardly pushed the foam around at all, just tapped on the bottom of the mold, and as a result she has big holes in her cheeks, and her lips & nose didn't cast. Fewer tiny air bubbles though :)

I
am very excited by the way she feels and moves in foam latex, I think the Jenny 2 body will be perfect. Oh...did I mention that this foamy test Jenny has a test armature inside? Watch for test clips soon.....