About this 3D model

A new method of Bed leveling is released in: http://www.thingiverse.com/thing:273805 This method is easier and much more accurate. Please give up this old one. Bed Auto Leveling for Prusa i3 with J-head Use SG-90 Servo Please read the "Instructions for configuring Bed Auto Leveling" of Marlin Firmware first. https://github.com/ErikZalm/Marlin Or watch this video. http://www.youtube.com/watch?v=x8eqSQNAyro My work https://m.youtube.com/watch?v=Dqq6X0cpX0Q (2013/12/22) Update model autoLevelJheadMount_v3.stl to fix up the broken surface.