MHP Pusher

thingiverse

I STRONGLY ADVISE YOU TO USE THE NEW PUSHER DESIGN INSTEAD OF THIS ONE. Many significant improvements have been made, with proper mounting and gear interaction being the most notable. https://www.thingiverse.com/thing:3134538 These are the internal pusher parts for the MHP 15. They require printing at a high infill setting (65%+), and must be oriented correctly to maximize strength. Many thanks go out to those more skilled designers who made an auto pusher possible in the first place. https://www.thingiverse.com/thing:2829145 ----------- IMPORTANT: After working on my second copy, I noticed that friction could cause jams at the bottom of the pusher piece. A straight spot on the bottom from (around the oval opening) needs to be rounded out. Additionally, the fit on the pusher gearbox isn't perfect, and I recommend gluing some 1/16" foam on the bottom (but under the pusher arm) to get it in there securely. ---------- Minor adjustments were made to the pusher to improve screw mounting and other things. A stopper was added to the pinion gear, although it might not be necessary, as I experienced a jam from the pusher arm itself slipping off the gears. The stopper should prevent it from moving too far off the ideal trajectory, but may not be required. The mounting bracket has been tweaked to fit better, as some spots were missed during printing that made it difficult to fit into place.