Models Created at Tiny Scale
Missing faces can occur when importing a model that was originally created at a very small scale.
For example, some OBJ files have vertex data that look like this:
v -3.4101800e-003 1.3031957e-001 2.1754370e-002
v -8.1719160e-002 1.5250145e-001 2.9656090e-002
v -3.0543480e-002 1.2477885e-001 1.0983400e-003
Vertices that have coordinates with very tiny numbers are a problem because SketchUp has built-in limitations that will not allow a face to be created if it is extremely small.
When importing a such model, you may get a result that looks like this:
To fix this issue, you need to open the model using another application (such as Blender, or 3ds Max) and scale up the size of the model. If you then save the model again as an OBJ or FBX, Skimp should now be able to import it without any holes.
We have investigated various workarounds for this problem and are hoping to provide a solution in a future update of Skimp.
Merge Coplanar Faces
In rare cases, when coplanar faces are merged, some faces may get inadvertently deleted. If this is a problem in one of your models, we recommend disabling the 'merge coplanar faces' setting in Skimp.