This printed alternative to a commercial funnel helps prevent spreading coffee on the bench when filling the portafilter and when tamping the coffee. Suits a 2 ear E61 portafilter.

I printed upside down, no supports, 25% infill.  The images are the prototype in PLA, I was going to reprint in PETG but the PLA one is working ok.  I have not need to wash it in hot water so it is holding it's shape.