My Makerbot was having a hard time printing out thin walls with water-tight settings, so I made this simple hollow cube to calibrate again from scratch. The walls of the cube are 1.5mm because that is the minimum thickness I would ever use. (See the OpenSCAD files if you\'d like to change dimensions)While going through the calibration process, I strategically changed one Skeinforge parameter at a time no matter how mundane or obvious the change seemed to be. The process is documented with expected vs. actual results, notes, build times, high res pictures, and download-able gcode files for those interested in SkeinView-ing.You can find it on the Wiki: http://wiki.makerbot.com/skeinforge-calibration-logs 2 Hollow Cubes.stl is for optimizing oozebane or extruder controlling for multi-part prints. (I haven\'t gotten that far, yet.)If you are new user and/or intimidated by the process of calibrating your Makerbot, I encourage you to document your entire process so that it will be easier for others to have a clear perspective of what you\\'ve done in case you encounter problems.