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/

Linear stages: https://www.instructables.com/Build-a-3D-Printed-Linear-Stage/ https://makerworld.com/en/models/485267 https://makerworld.com/en/models/485272

Rotational stage (in plane): https://www.instructables.com/Build-a-3D-Printed-Rotational-Platform/ https://makerworld.com/en/models/496230

Out-of-plane rotation (goniometric) stage: https://www.instructables.com/Build-a-3D-Printed-Goniometric-Stage-tilt-Correcti/ https://makerworld.com/en/models/497665

Micromanipulator: https://www.instructables.com/Build-a-3D-Printed-Micro-manipulator/ https://makerworld.com/en/models/478650#profileId-389899

(those are the makerworld links since the point help me to get printing consumables but you can find thingiverse links on my profile if you prefer...)