See photos for measurements of hot cathode.
The next steps are modeling the hot cathode (plus clearance) and subtracting that from a cylinder in OpenSCAD:
« Always be Knolling
OpenSCAD Model of Hot Cathode »
Are you gonna 3d print the holder or use lathe and drill press?
And I was curious about one more thing.
As far as I know for creating a near perfect vacuum, the moisture should be completely removed from the chamber, so that there would be no water particles inside.
So, what you do with this problem? (assuming, if this is problem)
p.s. You’re doing an awesome project! Good luck with it!
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