The faces of your model are reversed. You need to correct the face orientation by selecting the geometry, right clicking on it and choosing Reverse Faces.
They aren’t the same, the color indicates the face orientation. You have modified the back face color from its default blue-gray to orange as shown in the style thumbnail. The back face color is shown on the cylinder while the front face color is shown on the box with the sloped top.
So the white faces show what it looks like after correcting the face orientation.
You can fiddle with the colors (just don’t make them the same) but you need to stay on top of face orientation as you go. If it’s 3D, only front faces should be visible.
FWIW, I use a green back face color because it is easier for me to see it. On one of the laptops I use, the shaded front faces tend to look like the default blue gray back face color so the green takes care of that. I find even just a couple of pixels of the green easy to see.
Many other 3d modelling application will not render the backside of polygons by default. SketchUp is a little different in that it always render the backside. That’s why people run into issues some times when exporting to other formats like STL where the direction of the face matters.
Hello Dave,
I have a similar issue like Jonathan’s and I followed your post / advice of reversing the faces. However it hasn’t worked for me and in my case few walls are still missing. Could you help please?
Hi Dave,
That’s right and I did reverse a few faces to check the same. However it still wasn’t showing the walls in the layer view in my CURA. I could certainly make everything white and then revert to you.
There’s so much wrong, I don’t know where to begin. There are internal faces that need to be deleted, intersections that need to be made, edges that aren’t attached to anything, walls with no thickness, and gaps between areas where there should be no gaps.
How did you draw this whole thing in the first place?
Edit: I spent an hour or more cleaning up the mess and I’ve made a solid component of it. Look at this: R Home WIP (1).skp (238.9 KB)