I'd guess something is binding somewhere and that is causing your stepper motor to skip steps.
On Monday, December 10, 2012 6:06:34 PM UTC-8, chip beal wrote:
Hello all,
Recently acquired the Replicator 2 here at work, been working (mostly) fine for about a month, and now I am experiencing print shifts. Looking through the boards I notice this has been a problem so I contacted Support. They told me to tighten the Y-axis Pulley, which I did, but it's still happening. Attached is a pretty typical print from today. Any suggestions? I'd rather not have to completely hack the machine. Please keep replies as non-jargony as possible. Thanks for any help!