Prusa i3 MK3/MK3S Hotend Fan Cover/Grille (for black fan without rubber corners)

thingiverse

Finger/Fan protector for the black version of the Prusa i3 MK3 hotend fan (Noctua) without rubber corners. Made extra thin with bolt countersinks and corner standoffs for a close fit. FYI, installing the fan cover causes prints to shift 3-4 mm to the right on the print bed. Under normal operation this is not a problem, but I recently needed to print something 250 mm wide and it took me time to figure out why it was printing off the right side of the bed. So, I removed the grille, then stuck my finger in the fan a couple of times (why I created this protector). Once done with large prints, the grill goes back on at the first chance I get.