Cura make top and botton whitch I dont need. How to change this?

[almgeir 1]

Hello. I have a model

 

When I try to slice I got this

 

 

 

 

 

Cura create top and botton and infill. How can I disable this function? I tryed to set Top layers to 0. But its didnt help. Beacause top disapear even in places where I need it. (left part of the model). Help me please.

 

P.S. sorry for my english.

leman_russ_tank_hull.stl

 

 

 

[gr5 1,762]

It appears that some of your normals are backwards.  What cad did you use to create this?  It's very easy to fix this in blender or sketchup.  If you used one of those cad let me know and I'll give you simple instructions to fix in cad.

 

Anyway in cura I sliced your STL and got the same issue.  Then I ran the mesh tools "fix normals" and it slices great!  It also mentioned your model has 14 submeshes - which is not good but it sliced fine so do this:

 

In the upper right corner of Cura click "marketplace" and make sure you are on the "plugins" tab and install "Mesh Tools".  Then restart Cura.  Now right click on your model, choose "mesh tools" and choose
 "fix model normals".

 

[almgeir 1]

Thank you very much. It really works. I use SketchUp. And now, when I know where the problem is, I installed "Solid inspector" plugin, which fixed my normals. And everythin goes fine. Thank you very much again 🙂

[gr5 1,762]

Nice.  In sketchup - all faces should be white.  If they are gray you can right click and click "reverse faces".  Or of course you can use solid inspector.

 

But once you see how easy it is to fix normals with the mouse you may find it's irresistible to fix them manually.