Designed this as an end cap for the Bambu Labs fixed frame lithophane frames available in MakerLab. The frame is great, but it had a lot of light bleed out the end onto the wall, or whatever is to the side of it. This cap fits snug and will not fall out, but easily comes out by lifting with your fingernail. Print in the same filament and color as the frame for it to blend in. Or use a different color as an accent if you like.