Customizable Hex Nut Knob (not only for Prusa i3 Hephestos)

thingiverse

OK, the tensioner knob is hardly necessary - it serves more an aesthetic purpose for me (look at image 2 and you'll know what I mean). However, I guarantee that you'll never need a tool to adjust the tension on the x-axis again. See also my y-axis knob here and my bed leveling knobs there The Customizer automatically creates different shapes; it chose the "m6_tensioner_knob_rounded" one. If you experience problems getting the knob in place, simply heat up the nuts a bit (about 60-80 °C / 140-175 °F for PLA) and it easily slips into position. I've included the original SCAD file with modified start values for easier creation of similar knobs. Customized version of http://www.thingiverse.com/thing:713300 Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=714498 Instructions I print mine with 0.25mm layer and 20% infill. Using the Customizer with the following options: knurled_strong = 4; hex_nut_width = 10; knurled_height = 100; hex_nut_thickness = 10.5; bottom_thickness = 0; screw_hole_diameter = 0; diameter_2 = 100; height = 11; V1.2: flipping very long knobs (miniature hex handle) and a new hex shape V1.5: supporting tetragon up to octagon nuts, new wing shape, error in calculation of nuts fixed (relevant for bigger ones).