Hoist Style Y Drive

thingiverse

This construction delivers where lead screws failed with minimal extra effort. The attempt to improve on precision by utilizing lead screws didn’t work out. It made printers slow while adding a lot of excess complexity. Better ringing performance was often traded for play. In contrast, this hoist-style belt drive reduces ringing (ghosting) and adds accuracy without sacrificing speed. The acceleration is done by two belt segments instead of one, which makes the drive more rigid and adds more dampening components that contribute to dampening in the drive, thereby reducing ringing. Other benefits include reduced phenomena leading to less accuracy. Such as belt lengthening, positioning tolerances of the steppers, belt slip on the pulley, and deformation of the frame. The build process and theoretical aspects are covered in an online video series. (Available in German) Jump directly to: * Explanation: https://youtu.be/KpnH-dNvccg?t=11s * Build: https://youtu.be/S7teirXLRJg?t=98s Prats list includes: * Nema 17 Stepper Motor * GT2 Tooth belt * 30T 5mm Bore 6mm for GT2 Belt Pulley * 20T 5mm Bore 6mm for GT2 Belt Idler Pulley with Teeth * 20T 5mm Bore 6mm for GT2 Belt Smooth Idler Pulley (2x) * M5x20 Counter Sink Screws (3x) * M3 Screws to mount to the frame and the print bed Models here on www.thingiverse, which are incorporated in the project: * Y-Sled: 2-3-4-5-Owl https://www.thingiverse.com/thing:1999279 * Y Belt Clamp with Tensioner https://www.thingiverse.com/thing:2719753 * Wooden Prusa i3 Frame https://www.thingiverse.com/thing:2131603 * Test Cube to Analyze Ringing https://www.thingiverse.com/thing:2718914 * Slack Test https://www.thingiverse.com/thing:3173243 * Printbed Diagnosis Pattern https://www.thingiverse.com/thing:2752812