The Smell of Molten Projects in the Morning

Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.

The New Hotness

  • MaxLite Candelabra CFL: FAIL

    The bathroom ceiling fixture has a nightlight position that we use occasionally, but eventually the little 7 W Christmas Tree bulb failed and I installed this hulk from a box of CFL bulbs a friend scrapped out after switching to LED bulbs:

    MaxLite CFL - overview
    MaxLite CFL – overview

    I never tested whether it actually drew 3 W, but, hey I could feel good. Right? Right?

    Anyhow, this one failed after a few years, too. The “bulb” envelope looked like it might make an attractive blinkie or glowie, so I decided to harvest it.

    The candelabra screw base felt loose and popped off with a push:

    MaxLite CFL - overflow cap
    MaxLite CFL – overflow cap

    Perhaps they chose the envelope before finalizing the circuitry?

    This is why you need a lathe in your shop:

    MaxLite CFL - lathe cutting
    MaxLite CFL – lathe cutting

    It wasn’t particularly well centered, so that was done dead slow and finished with a few hand turns of the chuck. Obviously, I need a crank for the spindle.

    The rest of the circuitry is pretty well packed under that tall cap:

    MaxLite CFL - circuitry
    MaxLite CFL – circuitry

    Pulling the PCB out revealed the tube wiring:

    MaxLite CFL - tube wires
    MaxLite CFL – tube wires

    Cut the wires and chuck it up again:

    MaxLite CFL - envelope turning setup
    MaxLite CFL – envelope turning setup

    Turn dead slow again until it breaks through:

    MaxLite CFL - envelope breakthrough
    MaxLite CFL – envelope breakthrough

    Then finish by hand:

    MaxLite CFL - tube and envelope
    MaxLite CFL – tube and envelope

    It’s too cute to throw out, but … sheesh you can see why recycling this stuff is so difficult.

    For whatever it’s worth, I replaced it with a 3 W LED candelabra bulb that is way too bright.