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Archive 2014: Desktop Rotocaster

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Archive 2014: Desktop Rotocaster

Do things that don't scale.

— Paul Graham

A small desktop rotational casting machine built from Lego Technic components, designed to reproduce TomyTones 3D printed figures in resin using a rotocasting process.

Concept

Rotocasting distributes liquid resin evenly across the inside of a hollow mould by rotating it on two axes simultaneously. A Lego Technic drivetrain provides the bi-axial rotation. The TomyTones figure mould is mounted on the machine, allowing multiple cast copies to be produced from a single 3D printed master.

Tools

  • Lego Technic
  • 3D printing