Thing-o-Matic Y-Axis tensioner

thingiverse

Provides a girdle for the y-axis servo motor. Goes underneath the perspex. Tension is increased by turning a pair of bolts on the back side of your Thing-o-Matic. Instructions Forgive the code; I've printed and am using the product so I'm lacking enthusiasm for code cleanup :-) Print the object Locate: 2 M3x16 bolts, 2 M3 washers, 2 M3 nuts 3.5 Loosen the y-axis stepper Open up the bottom of the 'bot. Disembowel it. Unplug the y-axis stepper Place the nuts in the t-slots. Sticky-tape them into place. Place girdle over the stepper, nuts down. The bolts will wedge the girdle against the perspex. The girdle fits around both the stepper and the bolts/endstop for the nearby z-axis rod. Take a breath, and drill some holes through the back of your makerbot. I just eyeballed this. You might find a clever way to judge where to put the holes - you know, measuring and stuff like that.... Washers on bolts, bolts through hole into nuts. Tighten. 8.5. recable stepper re-tighten y-axis-stepper bolts. Actually, I don't seem to have done that.... Reembowel your makerbot Bottom on, and hope your makerbot still works... Notes: I "stripped" one of the nut-holes; I added glue and all is well. Possible improvements: nut-holes could possibly have their tolerances tightened thin plane of plastic to be wedged between stepper and perspex; may make fitting easier.