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Re: Vac U Forming?

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 

There is a much easier way to make med and large toroids.

Use a flat piece of plywood.  Slice notches 50% into a circle of styrofoam.
Slide a few dozen of these axially onto the plywood sheet.  Cover with
chicken wire and you have a nice toroid.  Much easier than mucking around
with plaster and other heavy solutions.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913

 > Has anyone on the list ever attempted to vac u form a
 > small toroid? I have the ability to cast small toroid
 > halves of plaster of paris. They come out smooth and
 > perfect, but they are also heavy and quite fragile. I
 > was thinking of using a plaster toriod half as a male
 > vac u form object. Once I join the two plastic vac u
 > form model halves together, I could sand down the glue
 > joint and wrap with aluminum tape. I welcome any tips
 > or hints on hobby vac u forming. For example, what is
 > the best kind of plastic for this purpose? Can I use a
 > small heat lamp to soften the plastic from above, or
 > must I use an "oven"?
 > =====
 > Gregory R. Hunter
 > http://hot-streamer-dot-com/greg