Stops printing after 3-4 layers???

[dunginhawk]

im actually thinking it may have been the model.. i dont know how or why that would be... i just printed a much larger piece, and it seemed to work just fine... surely bizarre

well, a little closer inspection seems there may have been a short (strange) in the wire near the extruder fan... if the carriage raised up even a little perhaps that cut the power and the extruder jammed...
so i re - sodered it and ill see what happens now.