Power Tool Construction Set

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AKA Cordless Tool Construction Set - a modular construction set of motors, rotors, battery packs, and frames for making cordless drills, saws, cutters, and a wide range of other cordless and corded tools. The goal is to remove design-for-disposal tools from circulation, replacing them with tools that can be cannibalized and modified to achieve lifetime design - based on a common set of standard parts. This is the small scale version of the Tractor Construction Set.



  • 3D Printed drill -
  • High speed rotary tool drill press - [1]


  • Motor-to-gearing connection - [2]
  • Good pictures of motor and gearing inside a cordless drill - [3]