thingiverse
A micro CNC/plotter with changeable tools heads. Assembled with 15MM Mitsumi extrusions and 300mm linear rails - also can easily be expanded to larger sizes. Still a work in progress, but functional.
PCB micro spindle https://www.thingiverse.com/thing:4682387
2D Pen Plotter https://www.thingiverse.com/thing:4682414
I built a custom carrier board for GRBL components, but a CNC shield would work nicely.
Direct link to the original creator's page
Click the "View on thingiverse" button above to visit the original model page on thingiverse. You can download the STL file directly from the creator's page for free.
This STL file is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
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Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer. Check the license on the original thingiverse page to see if modifications are permitted by the creator.