About this 3D model

extruder velleman K8200 Use aluminum frame and E3D improvement: used, the stability of the aluminum frame. you can move the horizontal frame in the middle of the vertical frame. simply changing fillement. easily switch from 3 mm to 1.75 fillement by changing the base block (1,75 mm block in development) used the aluminum frame as an additional cooling. http://youtu.be/CXCkt8PJKaM http://youtu.be/tGEQzeAPwj0