Models Positron V3 - Fast, Compact, and foldable 3D printer 386 999 19 Positron 1.2-An Upside-down Compact and Super fast 3D printer (OBSOLETE, PLEASE WAIT FOR 2.0) 373 1920 44 DIY Inverter 11-21V 150W with all safety features 33 374 2 The best DIY USB PD Power bank Design files 242 1519 13 Ultimate 18650 Power Bank with Infinitely Expandable Capacity 221 2481 9 DIY Mini Lab Bench Power Supply 59 673 1