I own a Rocket Espresso Faustino 3.1 V Grinder. There was no hopper that fitted perfectly to my grinder. Although all the Eureka Mignon 3D hopper models fit, I didn't really like any of the existing 3D models. So I created one that is more visually appealing. And by using transparent PETG filament, you can see the bean contents. The matching 3D lid is also included. But if you want a lid made of wood or metal, then you can use a lid for storage jars, which are available almost everywhere. (i will not share any link to a product, but you can find it easily in the big online stores). Or at any local store. To be sure, just take the printed hopper with you and test it out, and be sure that the inner diameter of the lid is between 90-92 mm. My brushed aluminum lid comes from a glass bean container that has a 100mm outside diameter and an 88mm inside diameter, with a rubber that increases the inside diameter to 94mm. This one fits perfectly.
The author marked this model as their own original creation.