Summary

This is an improvement to the Mazzer Mini hopper that allows you to cut off the beans much lower in the grinder throat. When swapping hoppers, it greatly reduces the beans you need to fish out of the grinder, or waste by grinding through. Especially useful if you have a decaf alternate hopper.

It may also be used as a micro hopper for making a shot or two of a particular bean.

Print the three parts. Remove the built in support from the hopper, and clean up that edge. The knob should be printed with a brim so it doesn't fall over. 5 or 6 perimeters helps too An M3x30 screw self taps into the hole in the insert. You can also tap the hole first.

Fusion360 file included.