Good afternoon everyone!
I've been learning hard surface modelling and after a while noticed that some polys of my mesh are darker than others. On closer inspection, it appears that each of these is somehow not a single face but 2 polys taking same exact space and sharing same exact vertices.
Initially, I thought that this happens due to duplicated verts and did
merge by distance but apparently that's not the case. If I box select one of those polys in wireframe mode blender prints
Verts: 4, Edges: 4, Faces: 2.
I strongly suspect that doing
fill holes (Alt + F) did this to me, but I don't understand why.
Any ideas on how to fix this? I surely can pick them manually but would like to know a proper solution which can remove them automagically. Googling yielded nothing but I might've been googling wrong terms.
Thanks in advance!