- Airwolf 3D
- 159 total number
- United States (Costa Mesa)
The most 3D printers operating simultaneously is 159 and was achieved by Airwolf 3D (USA) at their premises in Costa Mesa, California, USA, on 13 December 2014.
The record was part of an event on behalf of the charity Robohand. Each of the printers were fabricating prosthetic hands in a variety of sizes, and a total of 201 were printed at the event.