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Vacuum Tube LEDs: Fully Dressed 21HB5A
Black PETG definitely looks better than cyan for this job:

21HB5A – Black PETG base – flash Holding the plate cap to the tube with a thin ring of opaque epoxy cuts down on the glare under its edge:

21HB5A – Black PETG base – cyan phase Fire in the bottle!

21HB5A – Black PETG fittings – punched drive platter – purple phase It’s still running basically the same Arduino code as before, but I have some ideas about that…