Newbie ... Cura Slice anomalies?

[Badgersurfer 2]

I have just created an stl file with Fusion360 and loaded it into Cura lastest version but I get these white anomalies. This is a solid TPC print. Will the white anomalies come out in the print or is this just a Cura thing?

[GregValiant 1,248]

It's a Cura thing.  They mark the Z seam locations.

[Badgersurfer 2]

43 minutes ago, GregValiant said:

It's a Cura thing.  They mark the Z seam locations.

That's interesting thanks for the quick response. Would you be kind enough to explain briefly what the Z seam is and why is it staggered rather than contiguous?

[GregValiant 1,248]

The Z seam is the start and stop of the outer wall.  An outer wall is any wall with air on one side so any vertical holes in the model have their own outer walls, and the exterior surface has its outer wall.

Why they aren't exactly lined up I don't know but on some models that's how they will print.  You can lower the blemished effect by using the "Outer Wall Wipe Distance" setting at .1 to .2 (for a .4 line width).

There is a setting for hiding it (Z seam Alignment) but the outer surface of that particular model appears to be all radii so there isn't a good corner for Cura to hide it in (cylinders and spheres are tough).  When that's the case I usually just set it to "don't hide".  There are a couple of combinations of Z Seam Alignment and Z Seam Position that will keep the line pretty straight.