Printable Threaded Rod

thingiverse

Showcase your printing prowess with this test print, which involves a 200mm long threaded rod and matching nut. The double helix design features one complete turn per every 50mm section. Calculate stepper motor precision as follows: for a standard 200 steps per revolution motor, each step equals .25mm; with 2:1 gearing or half-step motor controller, it reduces to .125mm per step; adding both factors results in an impressive .0625mm per step. The nut reportedly slides on effortlessly with no discernible backlash. Look forward to incorporating this into a shuttle system or printer. For a visual demonstration, check out this [video](http://www.youtube.com/watch?v=Hkjf8x__SrE). Note that the nut may feel tight initially but will smooth out once worked on the threaded rod. Stay tuned for an update on June 18, 2011, featuring a quad-helical design for enhanced durability and reduced backlash concerns.