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Create complex epicycloid drawings with ThinkFun’s HypnoGraph, a marvelous drawing machine! Easy to use and fascinating to watch, the machine creates an infinite variety of drawings consisting of beautiful repeating curves. Fully adjustable parts can be configured differently to create drawings using the 13 interchangeable gears of varying sizes.


  • 1 HypnoGraph Base
  • 1 Geared Turntable
  • 13 Repositionable Gears
  • 1 T-Arm
  • Gear Crank Handle & Connector Parts
  • Instruction Manual with Drawing Setups
  • Pen Holder & 1 Fine-tip Drawing Pen
  • 20 Paper Discs