Bottom part printing as 2 x layer height

[NBull 14]

Hi I have a problem in Cura where it looks like it's printing the bottom 10 mm as double layer height what setting can do this?

 

  

 

Side note. Why can't i remove the doblet pictur?

Edited March 29, 2021 by NBull

[nallath 1,123]

The only setting that changes the layerheight is called "Adaptive layers".

[NBull 14]

Hi nallath

 

Adaptive layers is off (unchecked)

[nallath 1,123]

I think it might just be trying to print a thin model close to the build plate, which causes it to wobble.

[NBull 14]

I'm not sure it's wobble. 
Yes, it is a thin model, but its also printed fairly slow. And the two items printed have exactly the same problem. if it was "just" wobble woten it look more diffrent between the models. And I do also see some similar problems on models with a larger fodprint.

UMS5_09_Ske_A_REV_03.3mf

 

But I don't know, maybe it is just wobble. 

[nallath 1,123]

Cooling nearer to the buildplate is also more of an issue. So if the print is hotter, it could also cause a wobbly effect.

[NBull 14]

Hi I know this thread has been quiet for some time but my problem is actually getting worse without me getting closer to finding a solution. 

 

At the beginning it was only at the bottom part, now the problem is not only at the bottom, but gradually distribution at random on the print. 

 

  

 

These two items were printed next to each other, same orientation just with a small spacing. One has a decent surface finish and the other the weird shrunken layers (the bad one was printed furthest back in the printer) 

 

 

Since I can print two items next to each other without getting the same problem I do not really believe that it is layer related?

It could look like some type of under extrusion, but changing the setting don't help. It also looks too consistent to be under extrusion. it's always a full layer that has the problem and not just a part of it.

Also changing spool don't help, so it's not because of a roll that fluctuates in thickness.

 

 

Any ideas for something i can try!!