Quantity   Component name
1 × Aluminum bar 16x16, 300mm length
1 × Aluminum plate 3x65x130mm
1 × 3mm threaded rod 1m
1 × Glass block 25x25x8mm
1 × Teflon tube 8mm inner diameter
1 × Wood screw 5mm
1 × Small pieces of sheet metal
2 × Ball bearings 8x22x7mm Bearings on mein gear
1 × PLA or PET For 3D printing gears and hopper
1 × 8mm threaded rod shaft of main gear
4 × M8 nuts
1 × Total costs are around $50 plus an old 3D printer