Linear stage for optics

thingiverse

Linear stage for 20 mm motor from AliExpress with a 28 mm mount base that runs parallel to the axis. The lead-screw is an ACME 3 mm diameter model also sourced from AliExpress. I discovered that this motor has limited power, so you may need to explore alternative options or use lead-screws with finer steps. A parametric FreeCAD model is attached to help customize the device according to your needs. Parameters can be adjusted using a spreadsheet: 1. Diameter of the rails 2. Fudge factor for precise alignment with your printer 3. Motor mount base dimensions 4. Motor axis offset 5. Numerous other options To replace the lead-screw, you'll need to import or design a suitable replacement and make a cut from the pusher block. I was able to print all threads accurately, eliminating the need for taps.