XYZ Calibration:

Use this tool to calibrate your X, Y, and Z axes.  Click here for calibration instructions.  Enter your current steps/mm, then run a test move.  Enter the distance you told the machine to move, and how far it actually moved (measured with calipers, a dial indicator, or other precise means).  The tool will then calculate a corrected steps/mm that you can enter to properly calibrate your machine!