Layer Height Issues

[pichuete]

hi guys , so after battling with so many issues my printer now is printing "Decent" but now im facing this layer gaps . it seems that layers have been " squeezed " to much . if i print lower than 3mm the problem seems to be worse .

im printing ABS and i have done several changes to my printer to make sure its not hardware related . also i have done several extruder calibration and test .

things i have done :

Replaced threaded rods
Replaced Extruder motor
Adjusted belt tension
Test different setting on Slic3r , Cura and S3D .
leveled the bed as good as i can using ABL topography.

so my question is . this layer gaps are common with ABS or im having Z axis issues? Skiping steps ?

at this point i really don't know what else to check . so any help will be appreciated .


heres some example including a temperature test that i did:

[AbuMaia]

I don't see what you mean by "layer gaps". If it's the banding seen on that fan duct, perhaps your layer height is not an even multiple of your steps per mm.

[N5QM]

perhaps your layer height is not an even multiple of your steps per mm.

Can you give a little more information in regards to this and how to check it?

[AbuMaia]

http://www.prusaprinters.org/calculator/#optimallayer

[pichuete]

im printing at 0.3mm = 75 steps
0.24mm = 60 steps
0.2mm = 50 steps

can layer width affects this ? i see that in s3d you can adjust your layer width. i read in other forums that this needs to be at leat 20% bigger than the nozzle diameter. so for a 0.40 nozzle should be set at least at 0.48 ?

[N5QM]

I am using S3D as well and have it the width set to auto, which it sets as 0.48. I normally print at 0.2mm layer heights, but sometimes do use 0.3mm.