I've designed mine to be 3mm thick, it doesn't flex no matter how much I press on it. It definitely won't hold 3000psi of contained pressure but the pressure relief holes should let the pressure drop and keep it safe. As we are limited to sub 12ftlbs here in the UK feel free to test.
This message has been edited by qyuubi786 from IP address 184.108.40.206 on Jun 3, 2017 9:45 AM
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