New Pre assembled machine calibrated properly by Ultimaker?

[gr5 2,172]

>on one side I get a posetive band on the other.

Hmm. strange. A clue. Could be hardware then. Loose belts (play aka backlash) could explain this actually. But I still think most likely software.

>so i dont save out the Gcode.

I think cura saves it regardless. Somewhere. Not sure where.

Well just reslice the same part then with the same settings and look at the "layer" view. See if the same "shift" is in the gcode.

What I was talking about (fix horrible discussion): Some models violate rules of having one inside and one outside.

For example lets say you have a cube and then add the letter F on the side. In the cad you might create these seperately then select the F and place it touching (and slightly inside) a face of the cube. Some cad will do a union and remove the extra walls at this point. Some won't (e.g. sketchup won't). So at this point a ray (a straight line) passing into the F will pass through the wall of the F, then the wall of the cube, then the back of the F, through the majority of the cube and through a final wall a the back of the cube. What is cura to do? There are two external and two interal walls here. SHould it make part of the cube hollow? Or should it union it all together? That's what those "fix horrible" settings are all about.

Often the part looks fine when you load into cura in normal view but when you look at "xray" view you can see these internal messups and when cura slices there are "shifts" or "holes" or all kinds of weirdness.

>printed with a 1mm wall

What? Skin? Or is it 1mm in the STL? There's a big difference. The skin setting works best if it is always a multiple of the nozzle diameter (.4mm) so 1mm skin is going to overextrude the inner pass which is messy. Better to do .8 or 1.2mm skin (2 or 3 passes).

1mm STL wall is even more complicated so let us know if that model has a 1mm wall.