3D printing forums

You appear to be using a custom machine definition - you'll have to put the file/s for that inside a zip file and post it here for us to be able to open your project as a project rather than just loading the models.

PAMHT_Al2O3_316L_V2.3mf This is the .3mf file 

Thanks for your comment.   I'm actually referring to the 'gross' and fixed correction in the X axis that has to be made due to the 22mm nominal distance between the left and right extruder.   As it stands at the moment, using absolute Gcode positioning (X, Y), if the print head was moved to say (100, 100) to make a dot with left extruder, the head would need to be moved to (78, 100) to make a dot with the right extruder in the same location.   This means, when viewing the Gcode on a 3rd party viewer (i.e. not Cura), a dual-extrusion print will appear as two parts that are offset by 22mm in the X-axis, i.e. they wouldn't appear as they would end up being printed.   If the 22mm X-axis correction (plus any small calibration-based offsets of course) were made in the printer then in the above simple example both dots could be extruded at head position (100, 100) and the printer would make the -22mm offset adjustment internally. Viewing the Gcode in a 3rd party viewer (i.e. not Cura) would show the print from each head as overlapping.   Hope that makes sense?

Please attach a project file, so we get both the model AND your settings. I know this might be confusing, but if you use File -> Save project... you also create a 3mf file, but that 3mf file contains more information.   Without the project file, and with no description to go with your screenshots, I can only guess that the "yellow" material has the setting "Remove all holes" enabled, whereas the "green" material does not.

gibt es einen Mindestdurchmesser, der der Ultimaker drucken kann?