Mega i3 dual Z axis belt tensioner
cults3d
Simple belt tensioner for the mega i3 dual Z leadscrews. I know that the mega i3 has independent dual Z axis, but I've converted mine to using only one because I like having to adjust just one endstop switch instead of two to set my Z offset. The belt is an open end held together by two small zip ties, so I don't know the actual diameter of it. Seems to work just fine. This really isn't an upgrade for the mega i3, unless you wanted a belt to sync the leadscrews. Will need to edit the marlin firmware as well.
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