Macap coffee grinder single dose hopper

Single dose hopper with bellows

It is designed for a 70mm wide (outer diameter) bellows like this:
https://amzn.eu/d/cfTzPq8 (this is the one in the picture)

The openscad parametrized files are included if you want to try aother bellows. It may also work well with other grinders, especially those similar to Macap, like a Mazzer.

The retention is below 0.2g when using beans with a spritz of water for static mitigation.

I tried with the included tamper, to prevent popcorning without blocking the air blow, and try to produce less fines, but I couldn't realize any difference. I'd be glad if you let me know your opinion about the tamper.