Why Cura is adding material ?

[omarben22 0]

Helo everyone i'm using Cura 5.4.0 and it's adding material that dosen't exist on my model when i slice it, does anyone knows how to fix this, here's the file that i'm trying to print

omat.stl

[Slashee_the_Cow 271]

Could you provide the Cura project file (.3mf, go to File > Save Project in Cura) so we could have a look at the print settings? that almost looks like a tree support that has no idea where it's going (so if that's on, you could always try turning it off, but that's a wild guesstimate, so probably not that).

 

Also: if that preview screenshot has colour scheme set to speed, can you please change the colour scheme to line type for screenshots so we can see what sort of part it thinks it's doing?

 

Finally: Cura 5.4 does have some known bugs when it comes to slicing. Try slicing the same model in 5.3 and see if it's any different.

[GregValiant 1,258]

Yes, you are in "speed view" so it looks odd.  In "Line Type" view you would see that that "extra material" is the support structure.

[omarben22 0]

thanks for the fast reply ,

yes here's the .3mf file and a screenshot of Line type view also i try slicing it with Cura version 5.3

3mf.3mf

[GregValiant 1,258]

That screenshot looks exactly correct.  You cannot print over air so Cura is building a support structure to hold the plastic up.  It's an anti-gravity device that will keep the shoulders of that model from turning into a pile of spaghetti.

 

Here is a view from the underside.  All the red areas require support or they will fail.

 

 

[omarben22 0]

yes i know that but cura is adding solid material that dosen't exist (i'm not talking about the support structure ) like the example in the picture this material dosen't exist there Cura just add it 

[obewan 37]

lust a heads up.

version 5.2.1 does not add that part.

 

[GregValiant 1,258]

It's cyan colored so it's support and it's there on that particular model because the Support Horizontal Expansion is at 0.8.  If you set it to 0.0 that little nub will go away.  ("0.8" is the default setting.  I think it was "0.0" in previous versions.)

 

Set to 0.8:

 

Set to 0.0