Printrbot and Wallace Z axis stabiliser
by aliekens, published
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this setup will cause a wobble in your prints, not make it better. The reason is simple: a leadscrews and threaded rod has a bow in it, some more (threaded rod) than others (milled leadscrew). If you fix both ends of the screw, you will force the nut-part to move in the XY direction. Your Z-rods will stop some of that, but not all. If you leave the top of the screws unconnected, you will see move these in circles; that is fine, it means that movement is not going into your print.
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