This curtain rod bracket was printed, because cheap store bought brackets got broken. We like to hang clothes hangers with clothes on curtain rods. And as some clothes can be quite heavy (hoodies, jackets,...), cheap store bought plastic brackets didn't last long. So I made these brackets in the shape more optimized for heavy loads.
Hole diameter for rod: 21mm (rod diameter is 20mm)
Hole diameter for screw: 5mm
Hole diameter for screw head: 10mm