Cartesio – Low-cost Cartesian plotter robot

Re:Cartesio – Low-cost Cartesian plotter robot by romwell on Thursday January 30, 2020 @03:49AM (#22189905)

FYI, if you already have a 3D printer, you can totally use it as a 2D plotter (if that's not obvious).

And you can totally use a fountain pen if you feel like it.

In action: https://www.instagram.com/p/BlQHk43gwra/

Final result: https://www.instagram.com/p/BlJHawZgFi1/

Same, with a ballpoint: https://www.instagram.com/p/BlJ8dgmAaTA/

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Re:Cartesio – Low-cost Cartesian plotter robot by StavrosK on Thursday January 30, 2020 @07:22AM (#22190832)

How do I do this? Installing the pen and adding some initial gcode to raise the Z axis above the bed so the nozzle doesn't touch isn't a problem, but what generates the drawing gcode?

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Re:Cartesio – Low-cost Cartesian plotter robot by romwell on Wednesday February 05, 2020 @01:16AM (#22244436)

I wrote code that generated this particular G-code for the Dragon curve.

In general, there's software to convert PostScript or DXF to G-code (used with e. g. engraving machines).

The G code to move in XY is simple enough (G0 x y) that you could write a converter yourself.

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Re:Cartesio – Low-cost Cartesian plotter robot by StavrosK on Wednesday February 05, 2020 @02:50AM (#22244820)

G code is simple, I'm just not sure how simple reading the curves would be. I worked around this by exporting as a png and having Cura slice that, then writing a script to extract a single layer. It works beautifully, now I want to see if I can make PCBs with it, it would be a revolution.

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