Printrbot Z Hack
by bwevans, published
Loosely based on some work I was doing with the x-axis ends for the Wallace.
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Very cool, I have been unsatisfied with my Z on my printrbot Jr. I think this is just the ticket. I'll make this in the next few days and post a pic.
Yeah that min quantity sucks but in the end its not bad if you look at more expensive leadscrews out there. Just use stainless if thats what you can get.
The spring is shown in the second photo sandwiched between the two hex nuts, with the nuts tightened against the spring a little bit - enough to easily move and stop the backlash at the same time.
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18-8 M6 threaded rod mcmaster.com/#catalog/119/3149/=lskk82
M6 brass hex nuts mcmaster.com/#catalog/119/3167/=lskic8
(Could also use standard M6 hex nuts but the brass runs infinitely smoother.)
9mm OD 28.5L compression spring mcmaster.com/#catalog/119/1222/=lskjih
Vinyl tubing to attach the rod to z-motor shaft (haven't tested this yet)
Tested and shown on a Printrbot Jr. but may work on other Printrbots.
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