Growing Over-Extrusion After First Layer

JRCL

Hey all,

Working on dialing in my new custom build. I have managed to get some quality first-layer calibration sheets printed, but for some reason when I go to print a 20mm calibration cube it can't print anything decent past the 3rd layer. It almost seems to over extrude on all the layers after the first, which compounds on each layer until the nozzle is touching the previous layer. Resulting in the opposite of an elephant's foot.

Not sure what to try in my slicer settings or maybe I messed up in my .config? It has X&Y on belt and Z on lead screws, like an i3.

My X & Y Step were wrong previously, maybe my Z step is not right?

Let me know if I can pull any of my slicer settings or there is a way to share my profile easily on the forum

; Motor Speeds and Accelerations
M584 X0 Y1 Z2:6 E3 U4:5                               ; set drive mapping

M350 X16 Y16 Z16 E16 U16 I1                     		 	; configure microstepping with interpolation
M92 X100.00 Y100.00 Z400.00 E415.38918 U80        					; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00 U900    				; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z360.00 E5000.00 U6000 				; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00 U500.00 				; set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800 U800 I40                	; set motor currents (mA) and motor idle factor in per cent

First Layer Calibration Sheets

Calibration Cube Attempt

Norder

@jrcl
Try using a standard setting of your slicer in which you have not changed anything.
I think that would be the easiest way to rule out a slicer problem.
Or try another slicer.

Since the first layer looks very good, I don't think it's the printer itself.
I suspect wrong settings in the slicer... flow rate... 90% flow for the first layer... or or or...

Google Translate
----- Original Text -----

Versuche mal eine Standardeinstellung Deines Slicers zu nutzen in der Du nichts verstellt hast.
Ich denke das wäre der einfachste Weg um eine Slicer Problem auszuschließen.
Oder versuche es mit einem anderen Slicer.

Da die erste Schicht sehr gut aussieht, glaube ich nicht das es am Drucker selber liegt.
Ich vermute da eher falsche Einstellungen im Slicer... Flussrate... 90% Fluss für den ersten Layer... oder oder oder...

JRCL

@günter-jibben Unfortunately I started with a preset Prusa MK3S profile in PrusaSlicer and it yielded the same results. I tried the MINI profile to no avail as well. Even by the second layer, it's showing artifacts of the nozzle being too close.

Pictured below, 20mm calibration cube at 1st, 2nd, and 3rd layer.

Norder

@jrcl
In order to track down the error, you should start from the beginning, i.e. measure and enter all steps precisely.
Then determine the exact Z offset and also set the flow using test prints.

I suspect a wrong extruder step.
In the new photos, the first layer looks worse than the one in the first photo you posted.
Clearly too much filament has been printed here.

Google Translate
----- Original Text -----

Um dem Fehler auf die Spur zu kommen, solltest Du von Vorne anfangen, also alle Steps genauestens ausmessen und eintragen.
Dann den exakten Z-Offset ermitteln und auch den Flow anhand von Testdrucken einstellen.

Ich vermute einen falschen Extruder Step.
Bei den neuen Fotos sieht die erste Schicht schlechter aus als die aus dem ersten Foto was Du gepostet hast.
Hier ist eindeutig zu viel Filament gedruckt worden.

JRCL

It ended up being the Z Step after all. Ended up having to double it to 800 steps/mm. For anyone who stumbles on this, I'm using Prusa MINI + Z-Axis lead screws.