Man............
I wonder how much all of that costs?
I'd guess, ballpark (pun intended

) around an annual salary. Give or take if the guys are contracted or volunteer, and just how much material and machining cost went into it (did they volunteer their own machines, or contract out to a CNC house?).
With 8M subscribers worth of YT bux and Patreon supporters, that sounds very plausible.
I'm rather concerned that he never mentioned hydrotesting it. 750 PSI
gas was the first and highest pressure it'd been brought up to?

Tim