Big 3D-Printed Lamp Tries Some New Features

In lamp design, bulbs are usually given generous clearances because they get hot during use. LED bulbs however give off comparatively little heat, which opens a few new doors. [Mark Rehorst] created this huge 3D printed lamp, made with his custom 3D printer and a hefty 1 mm diameter nozzle, and the resulting device not only looks great, but shows off a few neat design features.

The LED filament bulb doesn’t give off much heat, so a PETG partial shade mounted directly to the bulb works fine.

[Mark] printed a partial shade in PETG that is made to sit directly on the bulb itself. The back of the shade is open, allowing light to spill out from behind while the front of the bulb is shielded, making it easier on the eyes. The result is pretty nifty, as you can see here. It sits in the center of the 600 mm tall lamp, which takes up most of the build volume of his self-made CoreXY-based printer, the UMMD.

The LED filament strands in this style of bulb are pretty neat in their own way, and some of you may remember that when they first became available as separate components, no time was lost in finding out what made them tick.

10 thoughts on “Big 3D-Printed Lamp Tries Some New Features

  1. That’s a nice looking lamp and Dr. Rehorst’s blog is a great read. I’d love to build a Dominator myself, however it’s a bit on the large side and the wife would object. :D

    1. You can always make it shorter. My original plan for it was to make an XY stage and electronics module that could be dropped onto different height Z axis modules- a tall one for home use, and a much shorter, easier to transport one for display at MakerFaires, etc.

      1. Thanks for the reply and, yeah, I did think of that. Probably give it a try but, being the wife didn’t care much for the Ender 3 I brought home, I’ll need to smuggle it in in pieces. :D

      1. Shade meaning the large, transparent outer body. The inner, colored “shade” is 220 mm long to match the length of the LED filament inside the 300 mm long bulb.

  2. “When all you have is a hammer, every problem looks like a nail.”

    As guilty as I am of this same mentality when it comes to my 3d printers, a simpler solution would have been to tape off the rear section of the bulb and paint a diffuser/reducer on the front section. But, I’d probably have just cut a strip of aluminum heating duct tape, stuck it on there and called it a day!

    I have a battery powered Coleman type lantern we use when the power goes out and, unless that this is way up above eye level, the light can be blinding. I took a piece of aluminum foil and formed it around one half of the lamp and didn’t even bother to so much as tape it on. “Meh… good enough” is my motto! :)

    1. The advantage of the printed “shade” is that it can be removed, repositioned, shortened, lengthened, or color swapped, depending on where you’re putting the lamp and the surrounding decor. The shade grips the bulb firmly and won’t slide off unless you pull it off. You can use opaque filament to completely block the light or use semitransparent filament like I used to let some light through. If it’s up high, no shade needed. If it’s at eye level, the shade is nice.

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