I'm going to have to look around for this a bit. Very cool.
Five bucks says he was using rosin-core (flux) solder and it ate away a brass extruder tip because the orifice is so hot, and the flux is acidic.

Quote Originally Posted by trishstreloff View Post
Did Sagar solve the extruder problem and work out the equation regarding the melting point on the alloys?
What about the nozzle issue?
Does anyone have information on the current status of this invention?