Went to the metal scrap dump a few times this week, but didn't had a change to get my hands on the big spherical plug valves I saw. They were moving tons of steel around with big magnets, so it was too dangerous to disassemble the valves there.
They are big valves, about 40cm wide, used by an oil refinery, I will try next week, two of them would make a wonderfull vacuum chamber.
vacuum chamber
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donderdag 3 maart 2011
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