Magnetic funnel for 58 mm portafliter like Rancilio Silvia ( also E61, Gaggia etc)

This is a magnetic funnel for my Rancilio Silvia Espresso machine. I've been using it successfully for the last 6 months and vouch that it works as needed. It uses tiny 3 mm diameter x 2 mm high magnets, 12 of them so that the grip is strong. You want the funnel to hold firmly to the portafilter.

The tamper fits perfectly with the funnel on, so there is no need to remove it before pressing the ground coffee.

It should fit portafilter baskets for espresso machines like the E61 and other.

Print it with the holes for magnets facing upwards and consider using a 5 mm brim to increase adherence to the printbed. Mine was printed with a random seam and 0.08 mm layer height to make the printing lines as fine as possible.