> Yeah, illustrates the steps pretty nicely, except I would
> have the thing in
> the oven with the vacuum hole towards the door, and leave it
> in the oven
> while I vacuumed it down I think. Minimises the cooling down
> as it vacuum
> forms.

...and wasn't the link I meant to post.
http://www.studiocreations.com/stormtrooper/main.shtml
includes making a vacuum table.

I like the idea of just leaving the frame in the oven, but that could
possibly cause problems with having the vacuum table & master suffering the
heating cycle.  Depends entirely upon the materials and construction, of
course.  Judicious use of a hot air gun could also reduce the cooling.

IIRC, Dave Gingery did a book on building a vac forming machine - I think
that included heater elements.

> Also gives a good hint about how to get the vacuum under the
> mould, which
> would be a useful way to do it.

Other designs I've seen involve a pegboard (perfboard?) topped box so that
the vacuum is distributed across the frame.

Peter
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