Hello,
What can cause raised z-axis stripes? It always occurs at a height when the top layer is being printed. You can see it on every exterior wall.
P1P
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Your print warped lifting the corners off the bed. There is less z height for the layer(s) when that happens so the filament has to go out sideways.
The aux fan cooling the print is bad for this. A warm chamber keeps the print warmer and less likely to warp. Try to stick the print down better by using a brim or extra tabs on the corners. Maybe try a different plate and/or glue or whatever you are using.
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Ok, but why does it spill at the height where in another part of the print it just prints the top layer?
Because it takes a lot longer to print those layers so more time for the print to warp I guess.
I never really looked at how prints warp. I imagined that there is a jump when bed adhesion ‘lets go’ but maybe it is just gradual and how much new warp and so how much a layer bulges sideways just depends on time.
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A little update. I printed this element with petg, I checked the profile from which I printed it and the aux fan is 0% … Maybe brim?
Brim will help some although it will help the most with zero spacing which makes it a pain to remove. Some slicers have a feature or plugin to add tabs to corners to help them stay flat on the build surface. Higher build plate temperature will help adhesion to a point, All my PETG profiles use 80C on the textured plate, the generic profiles are 70C. Keeping the chamber warm will help because the print cools less so let it sit with the bed hot for a while before starting a print. Oh and make sure your plate is squeaky clean.
Did you ever solve this. I am getting the same type of line on my X1 at 8.8mm off the bed. The parts are much smaller (printing 30 at a time) They all have the mark and there is no top layer. I think the Z must be sticking in that area for some reason. I might try manually running the Z up and down through that zone a few times.
I would have to see a picture of your print, but not hurt to do what you said. Also I would try just printing one at a time in center first see if it does it or not. Depending on those 2 factors I have hard time suggesting, but be best make your own thread.
It’s a highly-repeatable phenomenon. It is almost certainly an issue with the slicer. I sanded this print lightly to get a better look. You can see the horizontal line across the bottom edge. That’s also where the internal floor of this box is located (which you can see in the lower left corner of the 2nd picture). But you can see the wall thickness is pretty high. No way that this is the result of any kind of filament-delivery issue. It’s not a mechanical issue with my printer since the same print with the floor level raised moves the line higher up, and prints without this type of internal feature don’t get the line anywhere.
It’s like the slicer is routing the outer wall slightly under-sized when there’s a top layer printing someplace else on the same layer.
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Ok, I now get what OP talking about from your description. Yeah, I agree that is the slicer, actually I would get that with defaults on Prusa slicer as both have same slic3r code to decide slicing.
You ever figure this out?