The new concept of X-end using by threadless ball screw system.
thingiverse
The threadless ball screw system, introduced by Mark Sollack, simplifies RepRap's z-axis structure. Originally, two rods were required on each side of the Z-axis - one smooth and one threaded. However, with the implementation of this innovative concept, only a single smooth rod is necessary per side, allowing simultaneous guiding and movement of x-ends. This system's design includes an X-end motor holder and a 4.55 deg angle threadless ball screw nut for a 2 mm lead length, though it remains untested. Added to this assembly are the following parts: an x-end motor holder, a threadless ball screw nut, an oil-less bush holder, a motor coupling, an oil-less bush, six 623zz ball bearings, various bolts and nuts, and three M3 washers.
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