Unbreakable Bar Clamp (retrofittable)

Has the bar clamp on your Reprap snapped due to overtightening?

Stop super-gluing it... replace it with this new, retrofittable bar clamp that doesn't require you to unthread all the nuts/washers/pulleys!

(you should replace all 4 clamps, or you might have a hard time levelling out your bed)

If used in the construction of new Repraps, you won't need to pre-thread the nuts/washers/old bar clamps onto the threaded rod... saving you time ;)

Instructions (pretty self evident! but a few tips...):

  • Push the smooth rod through the hole first.
  • Install one end (it should hold without tightening down) and wiggle the other end to get the distance right.
  • If you have a hard time pushing the smooth rod through, spread the U-shaped clevis a bit (see details below).

Technical details:

  • Nut trap is intended to house a standard M3 nut.
  • When printed in the correct orientation the layer ridges should lock against the threads when the clevis is tightened, and prevent sliding along the threaded rod.
  • The through-hole for the smooth 8mm rod is intentionally misaligned by 4 deg when printed (see drawing). This enables the clamp to pinch and friction lock against the smooth rod when tightened.