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Hi, I'm trying to get an acrylic dome blown locally
and need to draw from psubers experience
as to what the minimum diameter is that
I could use and live with comfortably.
I'm in a sitting position with my head inside
the dome.
I have a 500 mm thin dome I am using on
a full scale mock up, but the firm I bought it off
is doubtful that they can blow a 20 mm thick sheet
to 500 mm. Another firm is confident
it can do a 450 mm O/D at 20 mm thick (18 mm at the
apex.) This would give me a 410 mm I/D.
Is this too small? I know condensation could be a
problem the closer my face gets to the acrylic.
I'm doing the pressure calculations on the "Under
Pressure 4.5" free program, what a God send
that is for a psub designer. Heres the link if
anyone out theres designing a sub and doesn't
know about it.
Interested to here what your opinion is on dome
size
regards Alan.
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