Strange warping

[arianna 0]

Hi,
I have a problem with my ultimaker s5, I tried printing a few very simple pieces with the new air manager installed, in PLA with a filament and a profile super tested, but the pieces warped inside after few layers, but in a really strange way: increasingly towards the right side. In the photo attached you can clearly see the first on the left cube in good shape, and then the others start warping more and more, on the right the last two totally detached from the plate. Any idea what could be the problem? What can cause the right/left  differences?

[Smithy 1,146]

Silly question: Your build plate is clean and free of finger grease or something like that?

Do you use something for a stronger adhesion, glue, or something else?

 

Another idea is, that you try to incrase the build plate temp a little bit. There was a post a few days ago with a similar problem (with air manager)  and increasing the build plate temp helped.

[arianna 0]

Thank Smithy. Yes, the build plate was clean and covered with a generous dimafix layer. Increasing build plate temp would work for sure, my uncertainty is what caused the gradual differences in the models adhesion

[geert_2 560]

Gradual differences:

 

1) Maybe a different airflow, different air-temperature, different bed-temperature from left to right? If you would have an IR-thermometer gun available, try measuring the bed temp at several spots. I found that in my old UM2, at 100% fan speed, the bed-temp could drop by 10-15°C locally, when printing small objects in PET, so the fans were always blowing hard on a small area. To compensate for this, I did increase bed temp by 10°C for PET.

 

2) Differences in cleanness?

 

3) Differences in bonding layer thickness, or method of applying?

 

4) Differences in nozzle-distance from the bed?

 

But even on the "good" side, I have the impression that bonding is not optimal. I think it would just be a matter of time before they too come off.

 

Are you sure this is PLA, and not ABS or something else? It looks rather dull and weird for PLA (but that could be an optical effect too).