[Ardren]

I think the 400cm^3 figure was for the non-pellet version while the pellet version can use 10mm nozzles and extrudes a ridiculous amount more. I wish there was more published information about both of their extruders, they look quite interesting.

I'm guessing that absurd power requirement is for the 85C heated enclosure variant, otherwise I'm no idea where the 60amps are going.

I remember reading about a slicer with an option to use the hotend just as a heat source that traced the previous layer to smooth/blend it. Using a laser may be a good method of improving the surface finish as well.