Making a liquid cooled plasma trap/catode for the sputtering chamber, so it can operate for extended periods of time.

Blog post about it: https://electronicmercenary.wordpress.com/2018/03/28/the-goblet-of-fire/

Designed in Fusion 360, machined in a cheap 3020cnc machine.

Completed:

Also, custom machined fittings, because yes: