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This is an upgraded version of this:
\nhttps://www.thingiverse.com/thing:3519669/files

modified to make it easier to print , assemble and disassemble.

The z axis rods are mounted a little looser for easier assembly, but can be clamped in place with two M3x10 bolts and two M3 square nuts.

The bearings are a bit looser too. If they are too loose, wrap them in electrical tape.

The design has been modified to use an Openbuilds anti-backlash block instead of the regular leadscrew nut. A printable version of the block can be found here:
\nhttps://www.prusaprinters.org/prints/56496-openbuilds-anti-backlash-nut-block-printable-versi

Source here: https://github.com/MatejPavel/3D-model-source/blob/main/3018%20CNC/Z%20axis%20upgrade/source.7z

Print instructions

0.4mm nozzle
\n0.2mm layer height
\n3 perimeters
\nsupports off

Bigger nozzles could probably work too, but the holes would need to be drilled out.

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3018 CNC z axis upgrade

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