Weird layer shifting

[sgrow23]

i have no issue printing this piece one at a time. It took about 4 hours. However if I print more than one with the exact settings I get at least one, sometimes more layer shifts. You can see the line and the supports really highlight the layer shifting. Any ideas?

[chanman]

Check your belts

[Perry_1]

So if you print one, you do not get layer shifts, but if you print two, you get layer shifting?

1. I think you should try printing slower, and see if that helps.

2. What is the model size? (I know it seems like a wierd question, but I have a reason for asking…)

[sgrow23]

Thanks for your response. Sorry for the delayed answer.

Yes, thats correct. One prints fine, anymore and I get a layer shift about 60% in. The object is 66.99mm(x) x 14.39mm(y) x 94.61mm(z - tall)…

What do you think? I can try printing slower but really doesnt make sense. If it was a belt issue I would think it would also happen when I print one…but one is flawless.