Fridge-magnet casting mould · pour silicone · cast in gypsum
Design a mould box in your browser — no CAD. Pick round, square or rectangular magnets, set the size, depth and the indent for the real magnet, then choose a footprint (eufyMake E1 mini / large bed, or custom) and a gap and the grid of raised magnet masters auto-fills. 3D-print the box, pour silicone in to cover the magnets, and peel out the cured flexible casting mould — then cast magnets in gypsum or plaster.