Evil Mad Scientist Labs sell a bunch of cool open source hardware kits for making plotters — basically, a very precise robot arm that draws with whatever pen or marker you screw into its grip. There's the Eggbot (for drawing on curved surfaces like eggs, balloons and balls), but there's also the Axidraw, which works on flat surfaces.
Axidraw owners have been decorating tees with Axidraws and colored markers, creating some really smashing designs.
Thanks to @shskaercher and @jbalogh3 for the inspiration and design. Shirts for my sons. #plottertwitter pic.twitter.com/jFrQKJmMgM
— Dan Anderson (@dandersod) June 10, 2018
Requisite video: #plottertwitter pic.twitter.com/jVnjUk6k1P
— Dan Anderson (@dandersod) June 10, 2018
#plottertwitter Sharpie on T-shirt for the win!#mtbos #iteachmath pic.twitter.com/gYwj4cFArM
— Mark Kaercher (@shskaercher) June 6, 2018
AxiDraw on t-shirts
[Lenore Erdman/Evil Mad Scientist Labs]
