I am trying to fix an issue I see when printing, in this case using a series of angle tests. I spent yesterday running tests to dial in my retraction settings and today wanted to try and figure out why I am seeing warping in prints that employ and overhang element.
The one in particular I am trying to fix is an error in the printing of the DII Cooler. Namely warping around a nut hole. On this version the hole is intended to be elongated (I assume to help with positioning) but the area around the hole has warped.
In the photo you can also see that I am seeing what appears to be missing or skipped layers and I am trying to resolve this at the same time as the warping (I should maybe be focusing on one at a time).
So to test progress I setup to print the angle test by Schematix on Thingiverse.
I performed my usual pre-print tests, Z-Alignment, bed leveling, Bed cleaning etc. I then started the print with the following settings;
Wanhao Duplicator i3 V2.1
Duet3d Wifi Firmware: 2.02(RTOS) (2018-12-24b1)
Web Interface Version: 1.22.6
Print Temp: 190
Initial print temp: 180
Build Plate Temp: 60
Retraction Distance: 1.3mm
Retraction Speed: 25
Print Speed: 60
Travel Speed: 120
Initial Layer Speed: 30.0
FAN Speed: 100
FAN Regular Speed: 100
FAN Max Speed: 100
Build Plate Adhesion: Skirt
Skirt Width: 3
Print Sequence: All At Once
The angle test print came out as follows and you can see that there is what looks like missing layer on stacks 2,3 and 5 but not on 1, 5 & 6
This leads me into my confusion (and thereby my question) about what term I should be searching for when trying to find a solution. What is presented in this print could be classified as a "missing layer", but it coulds also be classed as "temperature variation" or even "Inconsistent Extrusion". I don't know the correct diagnosis of what I am seeing in order to be able to search for a solution.
Any suggestions please. Has anyone else experienced this and how did you resolve it please?