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>BTW, the hard parts of vacuum forming seem to be the matter of an oven big
>enough for the work and creating a vacuum source (or is it sink?) with
>enough volume to draw down the material before the material cools out of the
I've watched vacuum forming done, and it was a very simple set-up. They
were forming polystyrene(not foam!)
The positive/pattern was simple wood fabrications, and there was no oven,
rather a big element and a few fans blowing the air down. I think the
vacuum part was just an industrial blower, as a sucker.
The force required will depend on the temperature, depth of draw required,
thickness of sheet, resolution of pattern. Although a nice convoluted
surface can be obtained, the edges always pose a problem, same with
fibreglass moulds. Trimming them to an exact size, and polishing to hide
the work, is almost impossible.
>A home vacuum cleaner arrangement is not really up to the task. Besides, my
>earlier experiments with home vacuums lead me to believe a lot of air FLOW
>is essential to avoid toasting the motors.
maybe a powerful blower and a venturi will be better??
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