28mm Spinner caps male/female

thingiverse

Most press-on caps are made to fit snugly on bearings, but I've found it challenging to get the size just right. These new caps come in male/female designs, ensuring a secure fit regardless of filament errors within certain tolerance ranges. I had already discovered 20mm caps and was pleased with them, so I sought out similar ones in 28mm size. My search was successful, and now I have both sizes available. A crucial design element is the 0.1 mm radius clearance between the male and female parts of each cap, allowing for precise alignment and fitment. To address an earlier issue where the caps were rubbing against the spinner, I updated the designs to provide a slightly larger gap between the flat surface of the cap and the bearing. This change has eliminated the problem and ensured smooth operation from the start.