The author remixed this model.
I made a mounting adaptor for a Nema 23 motor for increased torque, I had problems with the nema 17 even when I cut the bottle correctly.
I elongated the electronics box by 12 mm and added holes for heat set inserts in the top so the recreator3d community bottle cutter can be mounted to it in case you want to pull and cut at the same time. I haven't tested it yet though, I am not satisfied with that cutters strip width adjustability because I built the 608 bearing version and there is only one option for strip width on that remix. (the screw option is worse though)
I also remixed the runnout sensor housing to have a second screw so it doesn't move around. I am not satisfied with the original runout sensor spec, the wheel slips off the filament and either trips early or doesn't trip when the filament runs out, resulting in ruined filament. I will be looking into changing the spec to be something better, preferably a sensor with a a groove in the wheel to keep it from popping out.