This is a remix of wepollock's "Large Articulated Desk Lamp LED Cob"
A detailed build video discussing the electronics is at: https://www.youtube.com/watch?v=KkBDHNBvAhE
I made the following changes:
Split the lamp into two pieces, as one piece was too large to print on my printer. There's a lip added to help it hold together, but I suggest adding some superglue as well.
Added an end cap for the lamp, to keep from looking at the COB fixture end-on.
Modified the baseplate with mounting bosses for M2.5 screws and M2.5 heat-set inserts. This means you can print it in a more rigid filament (I used PETG) and attach the baseplate to the base with screws instead of having to print the baseplate in TPU. Note that I did not build holes into the base itself, only the baseplate -- fit by hand and use a 1/8" drill bit to finalize.
- Modified the base to accommodate my custom adjustable constant-current switching power supply. This lets you dim the light. Details on my constant-current supply are in the referenced video. This requires some electronics skill to complete. As an alternative, you could remix the switchcover to accommodate your own custom switch, make a place to put a power-dropping resistor if you decide to go the resistor approach, etc.
"v2" of the base has several changes discussed in the video, such as making the junction box a little bigger and accommodation for threadserts. I haven't not yet printed v2 so consider it untested.
I had a fair bit of difficulty with the segments being loose and the lamp not being rigid enough. I've copied MariusHomberger's Flexi segment into this thing for reference. I ended up wrapping a bit of blue painter's tape around the inside of each joint to stiffen them.
Print settings vary by piece. Make sure to print the lamp fixture itself with as little infill as practical to reduce weight. I went with 10% cubic. If you go with my base that accommodates the power supply, then you'll need supports around the power supply box. Used some brim on the base, as my first base suffered a layer shift and I wasn't sure if it was due to some lifting.
Many thanks to Wepollock, MariusHomberger, and BigCliveDotCom.
Supports on the base around the junction box. Brim recommended on the base and on the lamp fixture. Everything else prints fine without supports and without brim.