I have an issue (which may be unique to me) but wondering if anyone can offer a solution.
I have a number of objects from a supplier I need to animate. I get them in STEP format and export them as .objs for Blender.
On import to Blender, I apply an Edge Split Modifier at 30 degrees then smooth and it doesn't look too bad in Sketchup.
The problem arises when I animate the mesh using shape keys. When this comes in to Sketchup smoothness is applied automatically which messes up the normals of the mesh.
Example is here: https://skfb.ly/WnHo
The non-animated object next to it shows how it should look.
What have I tried?
- Re-applying the Edge Split modifier. Problem is you can't do this to an object with Shape Keys on it.
- Animated the Mesh with AnimAll. Problem is Sketchfab ignores this. I managed to export this as an .mdd file then re-import but it turns the object into shape keys again.
An obvious solution would be to re-model the part and apply bevels/constraints etc. to stop the mesh from smoothing but I have lots to do and wanted to avoid re-modelling.