@ Juicyfruit - Nice progress so far! You said me in the other thread that the importer was already operating a Remove Doubles on all objects, so it’s weird, because from my tests, it don’t.

Also there is a scale problem with the UV mapping. It doesn’t seem to take into account the texture scale specified in the Sketchup Edit tab from the Materials panel. It seems to export the default scale (10cm x 10cm).

Here are my tests files: https://www.dropbox.com/sh/xf6hybwvnq8t9py/AAC24MPBu2vZVfefI_j2zpbHa?dl=0

Edit: I tried on another model, an everything worked fine… so that’s great news ! But I’m really wondering what’s wrong with the import of my test scene… If you have time I’d like you to check the files in order to know if there are rules to make the import consistent.

Thank you Juicyfruit for this addon!