Welding Day

4 08 2009

My shop neighbor Arnie is a talented welder and he got his hands on a MIG welder today.

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Arnie, welder extraordinaire

He offered to help us weld up the sled. Sweet. Some pics of the welding:

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The finished sled:

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My first weld:

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It was hard to see the line I was welding.





Persistent Switch

2 08 2009

I’m starting to fabricate the persistent switch for the superconducting cable. Cryogenic Control Systems sells these heater cartridges for the purpose. Another option is to fabricate our own heater with the nichrome wire used for the reprap’s heater barrel. With a persistent switch we can test out the superconducting cable with a current.








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