The support you see printed in the image was printed in PETG with an Ender 3, so any newer printer should be able to print it correctly. I also changed the logo, removing the "ZZ" and replacing it with a more generic one (the "ZZ" was custom-made for me).

The screw is the only part I recommend printing with the head facing up and using supports; the other parts don't require them.

All parts were printed with 100% infill. I wanted to ensure it was strong, but 20% infill should be sufficient. It can also be printed in PLA, but be careful not to overtighten the screw, as this can increase the tension on the clamp and cause it to break.