Find all your DIY electronics in the MakerShed. 3D Printing, Kits, Arduino, Raspberry Pi, Books & more!

Comments

  1. Don Simpson says:

    My father’s father had a pedal-powered grindstone with a two-foot-diameter stone. It wasn’t a converted bicycle, but had a wooden frame and a steel tractor seat. I got to see it at his farm in Missouri during late 40s and early 50s visits.