Espresso funnel, parametric

A configurable portafilter funnel, since I couldn't find any to match my needs.

• Sits on the top and outside, rather than inside, so doesn't interfere with tamping
• Configurable inside and outside diameter of the filter basket + filter holder
• Configurable curvature and height of the funnel
• Configurable height and thickness of the sleeve that extends over the outside of the filter holder to keep the funnel securely in place
• Configurable cutouts for the “wings” (Yeah, they're probably not called that. Flanges?)

It's pre-configured for my La Pavoni Europiccola, with a 52.5mm inside diameter and a 60mm outside diameter. It sits flush on top of my tamping base (in which the filter rests on its “wings”, so this is actually the distance from filter top to wing bottom.

Should print well upside-down, unless you have very low bed adhesion.

The funnel in the photos was the first print attempt and came out a bit overly large so I reduced the size slightly in the upload.

Also added a version with a “pusher” at the back that lines up with the activation button on my coffee grinder, letting me grind by just pushing the filter holder+funnel against the grinder.

Printed in PETG on my Prusa Mini+.