Three lead screws and one nema 17 motor remix for C/D/J-bot
thingiverse
A solution for using three 8mm lead screws on your bot using only one nema motor. Making your bed more solid and get rid of the sag. Im also using 40 teeth pulley on rods and 20 teeth on motor to get 2:1 ratio. Doubles the steps_per_mm GT2 belt loop 6mm wide and 1524mm long. If having problem different tension between rods add another pin made of M5x25mm screw with 2 flange ball bearings. Im using 5x13x4mm Mini F695ZZ bearings. The metal mount for lead screw:http://www.ebay.com/itm/231452345160?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT Recommend using this mod with: 3-wheeled Z guide (http://www.thingiverse.com/thing:1802733) on all four corners like on the J-bot (http://www.thingiverse.com/thing:1721957) for rock solid result. The backlash nuts I'm using: http://ooznest.co.uk/ACME-Anti-Backlash-Nut Modded bracket: http://www.thingiverse.com/thing:1776493 Nema17 mount used in pic: https://www.thingiverse.com/thing:1488174 Example picture: Side of green 60x60 box after update. Zero imperfections or z-wobble :D Benefits explained in this video(not made by me): https://www.youtube.com/watch?v=1OLWSarvgDM
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