I designed this Batman-symbol LED-lamp for my wife.
It's 80 cm wide, 26,5 cm high and 18mm thick.
I designed it in 5 parts to fit the prints on a 22x22 cm printbed.
After printing i glued the Parts together, filled al the gaps with putty, sanded it down, primed it and painted it in black.
Then glued the RGB-Strip and the contoller in place.
For mounting I nailed two nails with 31,5 cm spacing into the wall and let them stand out the wall 1 cm. The mounting holes on the lamp are on the top side of the wings.
I printed all parts with 5 top and bottom layers with a 0.4mm nozzle and 0.2 mm layer height. The logo is 3 mm thick, so the front and the backside are 1mm thick and 1mm is printed with infill. This worked really well for me.
All the parts i used:
RGB-LED-Strip: https://amzn.to/2NRHZ5F (a bit more than 1m used)
Print with 5 top and bottom layers.