lamp bracket undermount

thingiverse

I broke my clamp for the swing-arm lamp, so I went online and found a thing on Thingiverse that helped me out: https://www.thingiverse.com/thing:21479. The design only had the top part, so I made the bottom one myself - it's way sturdier than the original. I designed it in Blender. My swing-arm lamp got printed from black ABS and there was some warping on the bottom, which I fixed by sanding it flat with 80 grit sandpaper. After that, I gave both parts an acetone vapour bath to clean up any lines. I still had the metal bolt, nut, and plastic knob from the original lamp base. When I created this design, I made the hole 8mm big, thinking it matched the bolt size, but then I found out the threads were a bit bigger, so I had to drill it out. To avoid that problem for others, I increased the hole size to 9mm in the design.