Easy way to identify wrong-facing face?

Hopefully this’ll be easier than my last issue but…

I need a way to easily identify wrong-facing faces. The textures for my project are mostly simple monocolors and there are fine details and complexities with the model’s shape which make it difficult to identify all the wrong-way faces. Is there some option or something I can toggle that’ll make faces stand out when I look at them from the wrong direction? (be it some bright red/magenta color or whatnot)

Enable the ‘3D Print Toolbox’ addon in under preferences.

You can then use it to check for Solid problems and select the Bad edges to highlight the flipped faces


OR

In the properties panel (N) under shading you can enable Backface Culling so the flipped faces will be invisible


Another way is to turn on “Normals: Faces” in the properties panel (N)…

Use Cycles :wink:


Cycles looks perfect. Is it a plug-in?

I have backface culling on but I’ve found that three times I’ve needed to make a thin object, which means using Duplicate, having lots of tiny quads/tris for the thin borders between the duplicate and original, and having quads/tris behind the ones I’m trying to identify that make identification difficult. What I was working on when I made this post was a collared shirt, and I had to create the collar. This meant up to three layers of stuff on top of each other which is why backface culling was quite tricky to use. Not to mention it was hard to get good angles to view because other parts of the mesh were close to this collar.

I got lucky though and Recalculate actually did exactly what I wanted it to do. I’m honestly surprised because just 30 minutes beforehand, automatic behavior was completely misbehaving. The entire mesh has three materials (I had to have the shirt on the body mesh because of ugly clipping problems in TF2 with a separate shirt object) and when I was filling in my tris and quads for the collar, it would arbitrarily assign faces that belonged to a material nowhere near the collar. So I was happy that Recalculate did exactly what I wanted. :smiley:

I’m a big fan of backface culling, when I need more I turn on the solidify modifier. (:

Cycles is pretty perfect. It’s the main renderer for blender now.
Switch it on here,