From video description:
This is a design evolution derived from my original Cerberus printer (and the Rostock before that) in which I've incorporated a lot of interesting ideas that I've had floating around in my head. Triple hotends, magnetic ball joints, heated bed, belt drive, and more. In this video I'm printing a 'tornado' from thingiverse with .2mm layer height and .4mm layer width. Single perimeter vase. The head moves slowly because there is a 10 second minimum layer time to prevent the layers from overheating and sagging the print. This printer can print easily 50mm/s perimeters and 100+mm/s infill with close to 300mm/s travels.