I'll be using the kitchen oven to heat the plastic, so I only needed to make the vacuum table. The table is actually a box that hooks up to my shop vac, so it sucks the softened plastic down. It's 2' square, with a pegboard top, 1x2 sides, and plywood for the bottom. The legs are 2' 2x4s.
I found a PVC fitting that fits my shop vac hose perfectly. It's some kind of reducer that I just adhered with caulk over a hole in the middle of the plywood.
It hooks up like this.
These are the frames that will hold the plastic. Aluminum window screen frame stock made into 12 x 16" frames with L brackets and Gorilla Glue for good measure. They'll get clamped on either side of the plastic sheet.
Now, I won't say what my first project with the vacuum former is yet, but I will tell you that it's related to the new projection effect. Stay tuned, because in the next few days I'll put this thing to use.