Geeetech single Z motor upgrade

thingiverse

*** Updated 181214: Added STL for Nema 17 Stepper. ***\r\n*** Updated 180319: Added Files for Lower Z Guide Supports and Filament Guide. ***\r\n\r\nThis design achieves three key objectives:\r\n\r\n* It keeps the Z-axis screws in perfect sync.\r\n\r\n* It increases available torque (and speed, depending on chosen motor).\r\n\r\n* It provides an easy upgrade path to proper lead screws, especially for the common T8x8.\r\n\r\nIt is designed specifically for the Geeetch i3 Pro B, but it should also fit other models with minimal modifications.\r\n\r\nThere are three essential prints and a few optional ones required.\r\nThe essential ones include the left and right top Z mounts and a brace for the two belt idlers.\r\nOptional: filament guide and lower supports for the Z-axis linear guides.\r\n\r\nYou'll need the following parts in addition to the printed components:\r\n\r\n1 Bipolar Stepper Motor - Nema 17 or Nema 23.\r\n1 GT2 852 mm Belt, approximately $2 on [ebay](https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=gt2+852&_sacat=0).\r\n1 GT2 20t Pulley for Motor.\r\n2 GT2 60t Pulley with 8 mm ID for Lead Screws.\r\n2 GT2 Ball Bearing Idlers with 5 mm ID. You may substitute ball-raced pulleys if you don't have the latter.\r\n2 T8 Lead Screws, 300-400 mm Long. 350 mm is ideal.\r\n2-4 608 Bearings (OD22/ID8/H7).\r\n2 M5x30-35 Screws.\r\n3 M3x12 Screws.\r\nYou may also need additional screws, nuts, and washers.\r\n\r\nOptional:\r\n1 M8 Threaded Rod, Minimum 330 mm Long (used for extra bracing).\r\n4 M8 Nuts and Washers.\r\nDon't be intimidated by the amount of text - this is a straightforward upgrade.