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secondsky

y-axis translation during printing

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Hi all, are just a few days that we use ultimaker and today we tried to print the stanford bunny.

The overall quality does not look bad, whereas we have not calibrated yet the machine.

But we had a problem on the y axis, which is sometimes shifted abruptly from one layer to another.

2012-03-26%2014.45.16.jpg

The first time was very showy, and I thought it might have touched the sensor limit and have messed up, because was very close from the origin.

But then I moved the model and it happened again.

2012-03-26%2016.16.53.jpg

What it is usually in these cases?

I have some hypotheses:

-sensor end of stroke

-error in the gcode (made with netfab for ultimaker)

-replicatorg error (I downloaded and installed SkeinPyPy but I still can not connect)

-a belt can be skipped (but should have happened on both sides)

Thank you all!

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possible cause is lose belts.

Check if the long belts are tight (they should make an *ploing* noise) and the small belts should be really tight. These can "jump" over the pullies if they are not tight enough causing the exact problem you have. I had this same problem because of a lose small belt in the Y direction.

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possible cause is lose belts.

Check if the long belts are tight (they should make an *ploing* noise) and the small belts should be really tight. These can "jump" over the pullies if they are not tight enough causing the exact problem you have. I had this same problem because of a lose small belt in the Y direction.

loose belts is one option, but that would show as rather sloppy prints.

maybe the printer knocked the print twice and shifted the plexi over a bit?

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