> When I approached the companies about embedding live circuits they
> all said their process would kill the circuit. So now I'm looking for a
> way to do this myself with the something approaching the quality of the
> deal lucites

Polyester is a completely different plastic to Lucite so getting it white
water clear will be a problem. You'd have to do some experimenting
with catalyst levels and try various brands. The company I worked for
made a clear polyester that was better than our opposition up the road
for example

I've got encapsulations of electronic parts going back 30 years and they
show no sign of corrosion. Of course there's no oxygen or moisture in the
middle of the potting which helps. Sensitive parts can be pre-coated in
epoxy to protect it from free styrene, but polyester crosslinking is very
much impaired by improperly-cured epoxy so you have to watch that,
especially if the object's epoxy coat doesn't have much of a polyester
layer on it. You may find there's a soft patch 

I did have a look at PVA once, with a view to making big permanent
bubbles. You dissolve the granules, make a bubble, and it 'sets' by
evaporation. Worked OK but might be hit-and-miss for encapsulations.
And PVA is quite soft, although it's water clear and you could put an
epoxy coat on. With some expert spraying or dipping it could come out
alright but you'll probably not get the finish of a good mould

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