E61 Portafilter Funnel fitting Lelit William Grinder

thingiverse

I was frustrated with the coffee that spills over the sides of the portafilter when grinding. So I checked out some E61 funnels, but they wouldn't work since the Lelit William grinder has a screw at the back to hold the portafilter in place. Therefore, I designed this funnel to have a lowered rear section that fits snugly under the screw. The result is that now a bottomless portafilter works perfectly well. I used FormFutura HDGlass for the print shown in the picture. However, my preferred material is PP, like FormFutura Centaur, which is safe to use in the microwave and dishwasher. Keep in mind that the portafilter may reach temperatures of up to 95 degrees Celsius, so I wouldn't recommend using PLA-type materials at all. Update 2020-06-01: -------------------------------- Uploaded v7. Improved fit and added an opening for the Lelit pin/screw.