This is a replacement lid for the Doser on a Mazzer grinder, e.g. Super Jolly or Major or Mini.
There is a slight cutout in the middle sized for a 58mm tamper. Of course you can put anything you want there that fits. I will sometimes just put my scale on top since my version is flat.
I would print it upside with some small supports. You could always print it right side up with supports as well... but thats probably more post clean up.
Mazzer_Doser_Lid.stl | 1.6MB |