Remesh different parts of a model with MMGS

The previous feature therefore allows you to remesh different parts of the model independantly, like I did with this model of a Napoleon statue on Sketchfab, remeshing details such as the sword separately from the horse’s body:

napo

To do so, you’ll have to separate your model into different “submodels”, while keeping the boundaries between them intact:

  1. In Edit-mode, select all the edges separating the zones you wish to remesh independently (using Edge loops, Select boundary loop, or just the plain Ctrl + right click method for instance)
  2. Use Mark as sharp to… mark them as sharp
  3. Use the Edge split operator to split the regions you segmented
  4. Select each region with Select linked or Ctrl + L, and separate them into a different object with Separate (or p) -> Selection. You could also just select everything and use Separate -> Loose parts if your model does not have loose parts you do not want to remesh separately.

You should now have as many objects as regions you created, which you can then remesh independently with the MMGS button, specifying a custom hausdorff ratio for each of them (keep in mind that the ratio is with the selected object’s size, you’ll therefore have to adjust!).

Once all your remeshed parts have been re-imported, you can then join them into an unique object by using Join or Ctrl + J, and jump to Edit-mode to Remove doubles vertices.