Quote Originally Posted by curious aardvark View Post
yeah 0.9 - and so far utterly failed to update it or change settings.
I do have a spare mks gen 1.4, but unless I can figure out some way to plug 2 z-motors into it - it's not much use for the ctc.
There are actually 3 different ways for you to achieve this. First if you only have one extruder then you have an extra unassigned stepper driver that can be assigned to z2. If you have 2 extruders and no unused stepper driver sockets on the board then you can wire the 2 z steppers in parallel with the one driver and they will both work together. This can only work because the z axis sees such light load that the stepper can handle driving 2 motors. And finally you can add an extra stepper driver add on board. These are universal and can pretty much be added to any 3d printer mainboard and then configured in marlin. I think marlin is up to 1.1.9, now.