This bracket set will allow you to use a 1/2" diameter PVC tube as a wall-mounted support rod. The zip file contains two end brackets and a center support, as well as decorative plugs to fill the screw holes.
A few thoughts on the state of 3D printing at home:
Seej patient zero. Barbie Armor Designer, artist, worst programmer ever. Mostly illiterate, but has minimal competence in spoken Mandarin. Not real clear on Ohm's law.