Here's a video showing and explaining the baton... This thing is pretty cool... It prints in one print, no supports, and can be done with a single extruder.... Will print on almost every printer....https://www.youtube.com/watch?v=DwO4HZPRfeI&feature=youtu.beJust download and print the baton and back stop... .3mm works best to save time... Try to print with at least 50% infill for strength.