https://www.posetteforever.com/viewtopic.php?f=1&t=4004&p=45398#p45398
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Nik
Friday, 07 August 2020, 02:29 PM

Re: TurboCAD: I Feel A Bit Betrayed...
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Hi !

IMHO, you must discover *exactly* what ViaCAD calls 'support' for OBJ textures. If I/O includes MTL, then you've hope. The lack of adequate info on-line, just advertising spiel, is unfortunate but far too common.

Second step is to figure if individual parts will retain their textures when the model is 'sliced & diced'.

If complex model is textured by 'wrapping' one detailed mega-texture, like draping vast Google Earth piccy over terrain, that is a BIG problem. IMHO, you will need to run split-out components through a UV UnWrap tool, copy/scale/paste texture sections onto their now-simpler UV map. I'm told it gets easier with practice...

Some CAD packages bundle such a tool, and there are various free unwrappers.

If each part already makes its own call to its eg 'blahblah016.jpg', and this is not lost, then things get a lot easier...
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I've just been informed by 'Andy' of AC3D Support that their OBJ import/export really, really does support MTL. Given my wariness expressed above, I'll need to invoke trial download, and dig deep...