Raspberry Pi based 3D printer has huge build space

[Updated: 1:30PM] — An “AON” Kickstarter project is pitching a $4,500 and up, Pi-based industrial 3D printer with dual FDM extrusion heads and a 18 x 18 x 25-inch chamber. Montreal-based AON started as a 3D printer service provider, but is now switching to the hardware business after the owners...