The Foodini is an extrusion-based device, unlike the powder-based ChefJet machines from 3D Systems. It uses pressure to push food pastes through an extruder onto a plate.
Fortunately, Foodini does not provide pre-made food “material”. The machine includes five empty cartridges into which you load your own food. Of course, the food must be transformed into an extrudable paste first, perhaps by cooking or blunt mashing. It’s then extruded appropriately according to the 3D model being printed.
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