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Hi @Nicko_Airbus, thank you for your post. Perhaps you could try to increase the number of walls or print outer walls before inner walls, it's a setting in Cura. You could also clean your threaded Z axle if it appears on the same level throughout your entire print, but since you say it is only on flat areas I doubt dirt is the issue. Hope this helps!
It looks like the effect is mainly on heights where there is a sudden big difference in surface area? Is that correct?
In the past I noticed that when the surface area per layer changes abruptly, this causes visible horizontal lines, a bit similar to yours. But mainly in *small models* (I don't do much big models). So in my case it is most likely due to changes in cooling time per layer, I guess.
Do you have the same printing speeds for all (inner and outer walls and infill)? If not, a sudden change of speed may cause fluctuations in nozzle temp and pressure, and that may be visible in the print too.
I am not saying that this is the cause, but it might be worth examining.
Notice the change in appearance here, when the printing of the outer edge is completed, and only the central stem remains. Huge difference in printing area, and cooling time per layer.
The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers.
So what’s new?
The obvious change is the S7’s height. It now includes an integrated Air Manager. This filters the exhaust air of every print and also improves build temperature stability. To further enclose the build chamber the S7 only has one magnetically latched door.
The build stack has also been completely redesigned. A PEI-coated flexible steel build plate makes a big difference to productivity. Not only do you not need tools to pop a printed part off. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, because...it’s PC). Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand.
The re-engineered print head has an inductive sensor which reduces noise when probing the build plate. This effectively makes it much harder to not achieve a perfect first layer, improving overall print success. We also reversed the front fan direction (fewer plastic hairs, less maintenance), made the print core door magnets stronger, and add a sensor that helps avoid flooding.
The UltiMaker S7 also includes quality of life improvements:
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Are you a fan of tree support, but dislike the removal process and the amount of filament it uses? Then we would like to invite you to try this special release of UltiMaker Cura. Brought to you by our special community contributor @thomasrahm
We generated a special version of Cura 5.2 called 5.3.0 Alpha + Xmas. The only changes we introduced compared to UltiMaker Cura 5.2.1 are those which are needed for the new supports. So keep in mind, this is not a sneak peek for Cura 5.3 (there are some really cool new features coming up) but a spotlight release highlighting this new version of tree supports.
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SandervG 1,518
Hi @Nicko_Airbus, thank you for your post. Perhaps you could try to increase the number of walls or print outer walls before inner walls, it's a setting in Cura. You could also clean your threaded Z axle if it appears on the same level throughout your entire print, but since you say it is only on flat areas I doubt dirt is the issue. Hope this helps!
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geert_2 553
It looks like the effect is mainly on heights where there is a sudden big difference in surface area? Is that correct?
In the past I noticed that when the surface area per layer changes abruptly, this causes visible horizontal lines, a bit similar to yours. But mainly in *small models* (I don't do much big models). So in my case it is most likely due to changes in cooling time per layer, I guess.
Do you have the same printing speeds for all (inner and outer walls and infill)? If not, a sudden change of speed may cause fluctuations in nozzle temp and pressure, and that may be visible in the print too.
I am not saying that this is the cause, but it might be worth examining.
Notice the change in appearance here, when the printing of the outer edge is completed, and only the central stem remains. Huge difference in printing area, and cooling time per layer.
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Nicko_Airbus 2
@geert_2 and @SandervG thanks a lot for your comments, I will try to modify these settings in cura.
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