What's up with my faces (SketchUp .obj export)?

SketchUp
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Good Morning!

I’m having a bit of an amateur moment because, well, in this case I’m an amateur: exporting for 3D printing.

I bought a 3D printer (finally) and decided it’d be fun to print a floorplan. Simple enough: a solid object with square edges, right?..not really.

So here is my model in SketchUp Pro (Studio) 2023:

Floorplan SU Model
Floorplan SU Model1921×991 215 KB

and here is the exported .obj model, showing that the faces really aren’t as equal when they were exported…so, whats up?

Floorplan obj File Export
Floorplan obj File Export1273×639 87.6 KB

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An OBJ file needs triangulated faces, so complex faces like your walls [with holes etc] get diagonals added to achieve this…
Any ‘square corners’ should be respected, although the flat faces will get some planar subdivisions…
Why not export to STL which seems the more common 3dPrinting format ?
Note that this format triangulates faces too…

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