Rough surface on 3D print facing the platform

[Christian3D 0]

Hello,

 

We have just purchased a new UM CURA S5. I have a question about the settings tho..

 

As you can see on attached files, the surface is very "stringy" and rough. This surface is facing the platform, where support materiale is being printed underneath it.

 

I am printing PLA at 220°C.

 

Any ideas?

 

Kind regards,

Christian

[Framar 23]

By looking at the part design it's cleat that some areas need support. Were you using PLA support or PVA support? You can add a roof to the support structure it will improve surface quality.

[Smithy 904]

The surface quality of parts that needs support is always not really nice because between support and the bottom of the model surface you need some space to be able to remove the support. This results in a not so nice quality. But you can use PVA which needs no space or mix both variants, that you use cheap PLA for the support structure and print just the support roof with PVA.

[Christian3D 0]

Hi, 

 

Thank you for the replies!
I was using PLA support. When looking at the settings, I can see that "support roof" and "support floor" are both unchecked. 

Would it improve the quality by having these checked on?

[Smithy 904]

You have to try it, basically yes, but as closer you get to the bottom surface or with a more denser roof it is harder to remove the support. So if you really need a nice surface there, use PVA for support.