Coffee Knocking

When I had to empty the handle of my coffee machine into the garbage can, I always found myself spilling coffee grounds all over the place.So together with my colleague Giovanni, we created this “coffee knocking” for the wet waste bin.the model is designed for 13.5 Cm rectangular bins, but can be scaled up for all eventualities.Personally, I used 75% fill ABS filament. because it will have to withstand stresses.I hope it can be useful to someone