I created a model of a low-poly house and prepared a UV map texture. I next wanted to extrude the polygon sides to give the walls sufficient thickness so it can be printed in color. However, somehow in the modeling some of the normals got flipped, so that when I try a global extrude, some polygons - particularly in the ceiling of the side porch area - extrude in opposite directions and defeat the operation. I tried flipping normals, aligning normals, splitting the polygons (so as not to affect the texture map) then doing a global align normals on the new mesh - nothing worked. MoExtrude seems to handle the extrusion part all in the same direction, but it screws up the texture map.
Model here (MIME error again)
https://adobe.ly/2DJp74F
I’ve reviewed several tutorials that demonstrate sure-fire methods for prepping a single-layer polygon models for printing (adding cloth or volume builder) but these add artifacts, and I’d prefer to keep the low polygon count and simple construction instead of adding a lot of new geometry.
I think if the normals could be forced into alignment some way, the standard extrude would work fine.
Any pointers would be appreciated.