#velocipede's cycloidal scribbling engine

[mrvelocipede]

I've been absolutely unable to do anything at all useful lately, so instead I have a packet of sparkly gel pens and am using them to draw with the not-really-a-spirograph that I made many years ago, as an excuse to learn how to design things for a laser cutter.

Kind of a weird full circle, actually, since I think I originally started a Tumblr because it seemed like it might be a good place to post pictures of spirograph-style drawings. There are probably a bunch of them in the early parts of my archive.