Little nozzle tags that clip on the 9mm Z-axis rod of a Prusa i3 so you won't forget what nozzle is currently mounted.
Small markings on the bottom follow E3D's "awesome" nozzle coding system. As a helpful reminder.
Fusion360 files included.
Requires filament change at 80% of print.
(Note that the printer itself also has a nozzle size setting today)
The author hasn't provided the model origin yet.