This is a simple knockbox that fits well with the Gaggia Classic pro, because it uses the same angles and scaled dimensions. The rod dimensions are 20x20x140. I used oak in my case, but of course you can also just print the rod-stl.
Because my oak was a little under-sized, I created the spacers, which I printed out of flexible material. Just try without and see if you need them or not.
I used PLA, which seems to be fine handling the heat of a fresh puck.The cleanboxis is an optional print.
The filament I used is Fillamentum Vertigo Starlight which is not a perfect match for the blue Gaggia but pairs quite nicely.
The author marked this model as their own original creation.