So, after writing up the last blog about casting with the vacuform insert and epoxy, I was able to work up an undersized vacuform prototype from the pubic louse sculpture.
It’s a long story, but I had to make an intermediate mold and cast of the louse sculpture before I can make the final mold in silicone rubber. I made this intermediate mold in alginate and cast in plaster. I removed the plaster cast this morning and was able to keep the alginate intact. I had to work fast because the alginate won’t last long and felt very dry to the touch. I laid in a thin sheet of dental wax and heated it to fit in the alginate mold. I poured plaster over the wax. When it sets up, I’ll peel the wax away and I will have an undersized form to vacuform from.
I’ll let you know how this works (or not) in a week when I get the silicone mold finished.