DeLonghi Dedica 51 mm dosing funnel ring for the portafilter
A dosing funnel that sits on the 51 mm basket of a DeLonghi Dedica EC685 or EC885 and stops ground coffee from spilling over the rim while you fill and distribute. The lower skirt has a 51.4 mm inner diameter that slips over the basket wall with a 0.2 mm side clearance, and a 3 mm inner lip rests on the rim so the funnel cannot drop into the basket. The cone rises 25 mm to a 70 mm mouth. Walls are 1.6 mm, and the smooth interior comes from printing it upside down on its mouth. Print in PETG or a food-safe filament since it contacts grounds.
Dedica baskets are smaller than the common 54 and 58 mm sizes, so most downloadable funnels do not fit. In SpeakCAD you give the basket diameter and preferred height, preview the ring in the browser at no cost, adjust the lip or clearance in the chat and download the STL.
Model a dosing funnel with a 51.4 mm inner diameter skirt 8 mm tall and a 3 mm inner lip for a DeLonghi Dedica 51 mm portafilter basket, a cone rising 25 mm to a 70 mm outer mouth, 1.6 mm walls and a 1 mm rounded top edge.