More Tube Joints!
thingiverse
We made improvements to previous models we created; our new spools (TubeSpoolIdler and TubeSpoolDriver) replace outdated concave spools that previously powered our belt chain. Our updated TubeJointBasic4 now has a more curved inner surface along with an angled edge for easier installation onto the tubes it was specifically designed to work with. Both models feature holes for TETRIX connections, though you'll need a wood screw for securing the spools in place.
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