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Spotted at the recent Cedar Rapids Mini Maker Faire by Steve Hoefer. Looks like a piece of hardboard with a circular hole in it, lined with bike chain, to make an improvised “ring gear,” with variously-drilled chain gears and sprockets that roll around inside it to guide the pens. A similar idea was published by Instructables user hunrichs back in 2008, but I don’t think this is the same maker, and I don’t think Steve managed to get his or her name. Can somebody help us out? Who made this?

Mini Maker Faires Are Just as Great as Full Maker Faires


Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I write for MAKE, serve as Technical Editor for MAKE magazine, and develop original DIY content for Make: Projects.



  1. Luis says:

    I was there ( and it was form the folks at Art Bikes Vintage & Custom. I was looking for them as well. They setup and I didn’t see them again, I want them for Maker Faire KC! Those are our info cards in the shot. :)

    1. Sean Ragan says:

      Thank you!

    2. Thanks Luis!
      (And thanks for making the trip to Cedar Rapids. It was great to meet you and all the other KC folks!)

  2. [...] out this BRAND NEW steampunk art-making machine! Crafted from repurposed bike parts, this simple chain and chainring apparatus allows you to create [...]