Re: IPMS-USA Journal: 'Build your own vacuum chamber'



Rob de Bie wrote:

I've always done my RTV and resin casting with vacuum only. It seems all American casters use pressure pots for casting. I have yet to find a European caster who uses that technique! Not that I know all of them though.. My airbrush compressor goes to 5 or 6 bars (75-85 psi), is that good enough?

40-65 PSI is good enough. What you need is a tank compressor that can dump all that pressure into the pressure pot in one shot. Of course the pressure pot is also important, don't cheap out when dealing with pressurized containers.
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