KdeKaluga

I did try these options. Spiralize does not work because the contour is not closed, Seam settings seem to change nothing at all.

I'm trying to slice quite a simple object in Cura 4.12.1 - it's a tube slice with wall thickness of 0.8 mm: The idea is that I have 0.8 mm nozzle and expect Cura to draw each layer exactly in one move - say, the first layer should be drawn from left to right, then printer should lift the head one layer up, draw the next layer from right to left, lift up, etc. This will be quick and produce nice looking result (it will be printed using the transparent PET-g, so being single-layer is important). Unfortunately, independently on what I am doing and which settings trying to apply, Cura thinks that it should draw each layer twice. What am I doing wrong? Which settings should I choose? I've attached my project file. Please, help. cura_issue.3mf