Dripping Solder on Plastic

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Technique:

  1. 3D printed circuit has grooves for depositing solder, and throughholes for components
  2. Solder is printed using a 3D printer - heater element + soldering wire
  3. Example - https://www.3ders.org/articles/20120413-progress-on-3d-printed-circuit-board.html - good to 0.1" spacing