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I am trying to simplify .obj mesh with multiple texture materials. In general I need two things

  • Simplify/clean the mesh geometry - the mesh topology is quite messy with holes, non-manifold faces etc.
  • Merge/bake all materials into single texture - as you can see the texture is split into 80 materials example model with 81 texture materials
  1. I tried to use Remesh-Sharp modifier which produces quite a good results on the ourside but closes the mesh on the inside of tunnel as you can see below. Is there a way to prevent closing the mesh or remove these resulting faces. enter image description here
  2. If I manage to clean or create a new mesh geometry how do I transfer the texture from my original model?

Sorry for combining two separate questions, but I hope that this way someone might suggest different workflow to my problem. Thanks, T.

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