The Neopixel-illuminated halogen lamp looks much, much better than I expected:

The ceramic ring screws down around the socket shell and pulls it up against the base; the threads have only as much precision as required to keep it from falling off. I may need to add a leveling shim just so I don’t have to explain why it’s always crooked.
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3 responses to “Vacuum Tube LEDs: Halogen Lamp Success”
And to satisfy, er, someone’s OCD.
Oh, you ain’t seen nothin’ yet …
[…] the smaller cap on the halogen bulb, this time I didn’t bother with a brass tube ferrule, mostly to see how it looks. I think […]