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> From: "Mark Willis" <mwillis@FOXINTERNET.NET>

> "Think creative";  You could use a smaller multi-ringed mirror, with
> Piezo power (resonant setup) or a pager motor used to counter-rotate the
> mirror ring segments?  (differentially move them to balance out
> precession effects.)  These mirrors can be rather light (vacuformed
> plastic should do; Hmmm!

Or aluminised mylar film stretched on a lightweight former e.g. balsa or
heat-formed yoghurt pot.
(Mylar film shrinks convieniently tight with a light application of
hairdryer. It disintegrates with just a teensy bit more hairdryer though).

We used mylar on wooden frames to make large, light, overhead mirrors for
use in clubs and for filming some years ago. It worked extremely well and
weighed two thirds of nothing.













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