I just finished Building my MPCNC. It is a 24"x24" running mega 2560 with a Ramps 1.4 set for 32 step, stepper controller DRV8825, T8 lead screw (http://a.co/53EHKon ), and a rotozip for the spindle. Firmware is the most resent MPCNC for T8 32 step no end stops. I am running it with the LCD. The problem I am having is that the Z-axis is only moving a quarter of what it is suppose to. I set the end mill at the top of the wood and use the LCD to plunge 10mm and when measured it is only 2.5mm deep. The X and Y are good it is just the Z.
Any Help would be appreciated.