ORDbot Hadron printing a test object at 300mm/s, with AlFe, a DIY extruder. For more, see the thread "Extruder periformance: can it be measured?" at http://forums.reprap.org/read.php?1,139866
Apologies for the noise, it comes from 3 fans blowing around the printer: 1 power supply, 1 RAMPS and stepper drivers and 1 cooling the extruder.
