Mendel Prusa Z clamp

by infodude, published

Mendel Prusa Z clamp by infodude Dec 31, 2012
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Takes the weight of the Z-axis instead of the couplings


Use in place of the bar clamps that clamp the Z-axis smooth rods to the bottom centre rod. Pop a 608 bearing into the cup. Use the end caps on the z threaded bar.
Especially handy if you use the alloy flexible couplings, which shouldn't be taking much weight.
Even more useful if you happen to have a stonking great X-axis motor which weighs a ton.

The scad code's a mess... quick lash-up job, probably won't scale very well so reluctant to call it parametric until I tidy it up, but for the standard iteration II Prusa it's fine.

Enlarged the cup hole so the threaded rod end stops don't grind in there.

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You're welcome

  • that printer above is running happily with those end-stops now :)

With the Z ends clamped you could even run a toothed belt between them and save a stepper, but the second stepper is cheaper than the pulleys and belt!

z-clamp2.scad is a little more tidy, and with comments added.