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Prints failing - layer shifts to the side solved

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Posted (edited) · Prints failing - layer shifts to the side solved

Just got our Ultimaker 2+ Extended.  Less than a month old, made a handful of good parts.

But now, almost every time, it's shifting layers in the middle of a print.

What would cause this, and how can we fix it?

Any insights are appreciated

Thanks

5a331ad7e3a37_UltimakerProblem(1).thumb.png.3bcaef29f41370d434f62e6c3775ffd9.png

5a331ad82e3a9_UltimakerProblem(2).thumb.png.4dba5c19eda448b3bfa83b9162b52048.png

5a331ad7e3a37_UltimakerProblem(1).thumb.png.3bcaef29f41370d434f62e6c3775ffd9.png

5a331ad82e3a9_UltimakerProblem(2).thumb.png.4dba5c19eda448b3bfa83b9162b52048.png

Edited by Guest

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Posted · Prints failing - layer shifts to the side solved

Latest print shifted even sooner

5a331ad85d13e_LatestPrint(1).thumb.png.6cdc08b018bed4916ac922b55c33151d.png

So we tightened the 4 screws for each motor, based on reading other threads (thanks gr5). Tightened them down tight, bending the allen key on each one.

Are there other screws that need to be tightened?

5a331ad8ca654_UltimakerScrews(1).thumb.png.895bb5b13cf06a8fcefca763a04ebd66.png

5a331ad902ec7_UltimakerScrews(2).thumb.png.4858ee9870a061ec3e5d1f7687d95a28.png

Seems to be printing better so far, time will tell

5a331ad89048b_LatestPrint(2).thumb.png.31dba0473bafd0747b520510be562c11.png

5a331ad85d13e_LatestPrint(1).thumb.png.6cdc08b018bed4916ac922b55c33151d.png

5a331ad8ca654_UltimakerScrews(1).thumb.png.895bb5b13cf06a8fcefca763a04ebd66.png

5a331ad902ec7_UltimakerScrews(2).thumb.png.4858ee9870a061ec3e5d1f7687d95a28.png

5a331ad89048b_LatestPrint(2).thumb.png.31dba0473bafd0747b520510be562c11.png

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Posted · Prints failing - layer shifts to the side solved

Well, tightening the outside screws and lubricating the rails didn't work.  The next print was worse than before.  Originally shifted in the x-direction, this one shifted in x and y directions.

5a331ae5d332f_Take2(worseaftermaintenance).thumb.png.d470b3a4de020ddc2660d3739ccbbddd.png

Thanks Peggy, I've just tightened all those grub screws.

Also the rails were out of alignment.  So first I aligned them, using your link above.

Then I used a Bondhus brand hardened 2mm allen key (hex) to tighten down all 12 grub screws very tightly.  The weaker, cheaper allen keys (including the ones that came with the UM2E+) seem to just give way, stripping themselves or the grub screw.  

Thanks to gr5's suggestions here:

https://ultimaker.com/en/community/6768-how-to-tighten-x-y-axis-set-screws

5a331ae5d332f_Take2(worseaftermaintenance).thumb.png.d470b3a4de020ddc2660d3739ccbbddd.png

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Posted · Prints failing - layer shifts to the side solved

Aligning the rails, and tightening all 12 grub screws worked.

Printing beautifully now

5a331b0227b08_EndResult.thumb.png.11f917af7c5a12bf2a9414a7edb0d646.png

5a331b0227b08_EndResult.thumb.png.11f917af7c5a12bf2a9414a7edb0d646.png

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