This design is a printed linear stage capable of a positioning accuracy in the order of 10 micron. Besides 3D printed parts it only uses 2mm metallic rods, a 40mm spring and a 55mm M3 bolt with nut and washer. The complete fabrication process is described in an instructable: https://www.instructables.com/Build-a-3D-Printed-Linear-Stage/

I also designed a 2 axis translation stage, a transversal translation stage and two rotation stages. All 3D files will be available shortly:

https://makerworld.com/en/models/485272

https://makerworld.com/en/models/485267