Hey guys, I have my new prusa type build up and running, well sort of.. it's doing everything it should, firmware all good, pronterface happy, stepper speeds and axis max/min's set..

The issue I have is the Z layer height. I am waiting for a new hot end, so I have it printing invisible stuff right now, but it seems to be jumping like 1cm between printing layers, so instead of 0.1 it jumps 1.0..

I tried using josef prusa's calculator, but the prob is my steppers are so cheap and nasty, there is like no info on them at all, no serial, nothing... I am pretty sure they are sainsmart, so I went off those settings but still..

Is there something really incredibly obvious I missed in my eager rush to get it built?