Velofuso: solo-designed gear-pump espresso machine and cylindrical-burr grinder

Velofuso began as one person's espresso machine for personal use and spiraled, in the founder's words, out of control. The trigger was a frustration with the category: machines kept getting bigger, more plastic-heavy and more app-integrated while their working parts stayed stuck — the vibratory pump dated to 1977 and grinder burrs were descendants of spice-grinder shapes. As a production engineer, he decided the fix was not another app but the internals themselves.

The result was two products: Trefolo, a minimalist espresso machine with a compact adjustable gear pump (gear pumps otherwise meant spending several thousand dollars), and Turbina, a grinder with a cylindrical burr that hides the motor inside it and is supported from within, avoiding the alignment problems of oversized flat burrs. Both run on DC power from an external brick, keep plastic out of the fluid path, and strip down with ordinary tools; the machine even skips a boiler, taking hot water from the user's kettle and concentrating engineering on holding pressure in the group head.

As a launch it was deliberately unfinished but public: the maker did every photo and video himself, published the manual, promised a full spare-parts catalogue, and released a kit so existing espresso machines could adopt the gear pump. Four factories told him the parts were impossible, and months of prototypes sprayed water in his face before one day everything added up to a good shot. The Show HN presented all of it, warts and all.