Prusa MK3 Nozzle Fan Holder R3 Revision

thingiverse

I just completed my second Prusa MK3 kit, and it came with R3 revised parts. After finishing the assembly, I decided to redesign the Nozzle Fan Holder. The original holder only used one fastener opening to mount the fan, while the other looked too bare without a single screw holding it in place. It was also easy to rotate the fan assembly since it was only mounted using one screw. This updated part reuses Prusa hardware and mounts the fan securely in its place. Parts Required: One M3x10 fastener to attach the holder to the extruder body. Two M3 nylon nuts seated into the holder. Two M3x18 fasteners to secure the fan to the mount. To seat the nylon nuts in the fan holder, use an M3 fastener from the other side. As you start to tighten the fastener, it will pull the nut into place. Share a picture if you build one!