About this 3D model
http://www.youtube.com/watch?v=021bGXrXBPY this shows a maker bot extruder on a bfb tool because of how easy it is to get parts and nozzles in the usa. i also created an adapter bracket that holds the top of the ptfe in place when clamped by the plexy glass on top. just for those bfb people that need to send out for another extruder. mine broke last week after clogging.