Polargraph DrawBot Spool

by MakerBlock, published

Polargraph DrawBot Spool by MakerBlock Jan 22, 2012

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I'm working on building a DrawBot similar to Sandy Noble's awesome Polargraph. http://vimeo.com/24647023

My goal is to use a spool for monofilament line, rather than a beaded cord. This spool is designed to press-fit together on a piece of monofilament line and then press-fit the spool onto the stepper motor shaft.


  1. Adjust the SCAD file as necessary
  2. Print the STL
  3. Press fit the spools together - with a piece of monofilament line stuck into the notch of the spool bottom
  4. Press fit a spool on each motor

You can follow my DrawBot build log progress on my site:

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How large are the shaft holes?