How to fix this defect?

[pizemakerstation 1]

I use Ultimaker S5 Pro bundle, generic PLA with a 'Fast' print profile for this work. Instead of a straight wall creates a step, This step seem to correlate with the model's bottom.

How can I fix the problem.

[SandervG 1,521]

Hi @pizemakerstation, thank you for your message. Have you made any other changes to the profile? In particular to the speed/jerk/acceleration settings? 

Perhaps if you could share the curaproject file that could help. Thanks! 

[Smithy 1,144]

The "Fast" profile is not the best choice for good visual results, so try it again with the visual profile.

As already said, printing too fast can be the reason for such steps (and other defects)

[pizemakerstation 1]

@SandervG Here is my file. Thank for all the suggestions. I'll try to experiment it soon. coaster holder_Fast0.2.3mf

Edited August 21, 2020 by pizemakerstation

[Jutamad 0]

Hi Everyone!

I'm doing the same project with @pizemakerstation 

 

we'd like to give more detail about our problem.

Any idea  to fix this problem ?

 

Thank you !

 

 

 

Edited August 21, 2020 by Jutamad

[pizemakerstation 1]

I tried to test my work with a lot of parameters. It seemed like wall thickness and wall count are the key of this problem. But it wasn't. From the attached image, I printed sample 55 by using 'Fast' profile and changed wall thickness to 0.2 mm. 1 wall count. It looked very good. Sample 56 was the same but I changed wall thickness to 0.4 mm. The result was as similar as sample 55. And it was worse again at sample 57 because I changed wall count to 2 with the same wall thickness 0.4 mm. The problem came back. So I decided to print my work full-scale with wall thickness 0.2 mm. and 1 wall count. The problem came back. I have no idea what to do next.   

[SandervG 1,521]

Hello, have you tried the visual print profile instead of the fast one?

[pizemakerstation 1]

@SandervG Yes, I have. It still has a line on the shell. Sample 60 is profile 'Normal' which means its layer height is 0.15 mm. Sample 61 is 'Extra Fine' and its layer height is 0.06 mm. 

[pizemakerstation 1]

From Prusa community, they called this problem 'bulge/buldge issue'. https://help.prusa3d.com/en/article/the-benchy-hull-line_124745#_ga=2.128636812.1815477536.1600838472-2105253675.1599027312 This is how they solve it. I would like to know how Ultimaker solve this too.