HotShot Front Hub

thingiverse

A close, but not identical duplicate of the HotShot front hub. This is for the original only, with the 3mm ball joint screw. The bearings do fit but it can be a very tight fit if you are using an FDM printer. The tolerance for the bearing insert is very small and an FDM printer with a 0.4mm nozzle is sometimes just not able to get that dimension perfect. The diameter of the bearings is exactly 11mm and the insert is designed at 11.1mm to make sure the slicer chooses the safe side of any rounding. It sometimes still does not do so completely, but making them even larger by design could result in too much play. I did clean up mine with a cutter knife and the sharp edges of my calipers. After that it was a tough press fit with a piece of plastic I found somewhere. Make sure the bearings are properly seated - even a slight protruding edge can cause you axle to feel stiff. If everything goes perfect, you hear them say "click" when fully seated.