M3 Bed Leveling Knobs (not only for Prusa i3 Hephestos)

###In addition you need:
4x M3x35 screws
8x M3 nuts

Please refer image 2 how to tighten the nuts.

If you got 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 in place.

See also my x-axis tensioner knob here, my y-axis knob here.

Customized version of http://www.thingiverse.com/thing:714498

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=714498