kevlar

I have the same problem, only my printer goes off course in all directions. I checked all the pulleys and timing belts and all are okay. Any suggestions? Dazzan, how did you fix your problem?

Hi all, After assembling my ultimaker, when I start a print, it will print fine for maybe 4 or 5 layers. But then the printer head will go off course and print at random. I have no idea what is wrong with it. Anyone have any ideas? I'm running the newest version of Cura on mac. Thanks!