I liked the Coffee Grounds Funnel/Distributor for Gaggia Classic by kitahiro921 which I used for what felt like a decade without any issues. The issue with it is that it is not modeled with printing in mind. It requires support and then still is a pain to get printed in good quality.
This is a remake of it that prints with less hassle. No support needed. The model includes support that breaks away very easily when printed at layer height <0.2mm.
You will probably have to flip it upside down in your slicer.
I printed it for my Gaggia Cubika but it should fit more machines that have a 58mm basket.
Espresso_Distributor_v7.stl | 108.1KB |