I am using a 3rd party autocad program to design some models. I can export in 2 formats other than the native format Obj and 3ds. Obj format keeps the materials I created in the model but when I export in 3ds I loose the Materials and it is not solid, like the faces are inverted.
the 3ds files are small in size (25 MB) but unusable in Poser due to the faces, but the Obj files are large around 72MB. Is there a 3rd party software that can reduce the obj size but still make detailed for poser too use?

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