Railcore Belt Tensioner

thingiverse

Belt Tuner for Railcore Installation. Locate the lever positioned behind the X or Y motor on top of the stepper body as depicted in the image provided. Next, secure the lever to the bracket using an M3 bolt and gradually tighten it until the Y rail is perfectly parallel to the right top extrusion (or Halo, if installed). This tool can be used after securing either the X or Y motor, or you can print two sets and tune both X and Y simultaneously. Tighten the stepper mount bolts to their final position and remove the tool once completed. Ensure that the edge of the bracket is slid up against the nylock nut securing the right panel (the significance will become apparent upon assembly). Use underextruded supports as specified. I found that PLA at full tightness exceeded Gates's recommended tension. To achieve the full throw of adjustment, it is crucial to use the longer McMaster Carr part number 94180A333 Tapered Heat-Set Inserts, measuring 6.4mm in depth. While less deep inserts may be used, they must be installed on the front side. I experimented with a 20mm bolt as depicted, but you can experiment further. This setup is not perfect but works effectively. The included files can be utilized on either side, and a version for the 713maker Halo is also provided. Additionally, a Fusion360 file is included for those who require it. To create underextruded supports using Simplify3D and a 0.4mm nozzle, set up your support extruder as follows: .35 nozzle, 0.7 extrusion multiplier, horizontal offset 0.5mm, 1 upper vertical separation layers, 2 lower vertical separation layers.