This is a light guide to use a led strip for indirect lighting. The strip lies in a recess and shines on a curved surface towards the ceiling or a wall.

Things to consider:

• I used bambu basic white and had a lot of light bleeding downward from the strip, so i lined the recess with aluminium tape, this worked quite well yet some bleeding still exists (see pictures)
• The parts are 125mm long so they can comfortably be printed standing upright for the best surface finish (outer walls first improves this further)
• On each end there are two holes 10mm deep for a 15mm strand of filament to help align the pieces. I drilled these to spec with a 1.75mm drill, if you don't have one you might want to modify X-Y hole compensation
• The back has a 20x10mm recess 0.8mm deep for adhesive foam tape so it sits flush against the wall
• The pieces can be freely scaled along the z axis (standing up), just mind that this also scales the depth of the guide holes and the width of the adhesive indents
• The print profile has two pieces interlocked for efficient printing, just clone this pair to as many pieces as you need

Feel free to modify the step file I attached.

Enjoy!