Frequently asked questions
What does mesh cleanup change?
It removes invalid, zero-area, and duplicate faces, then writes only referenced vertices with new face normals.
Can this make every mesh watertight?
No. Simple loop filling helps straightforward holes; branching or inconsistently wound boundaries need a DCC.
Does it recalculate normals and tangents?
It recalculates OBJ face normals. Tangents require UV-aware processing in a DCC or engine importer.
Will it fix flipped normals?
New normals follow each triangle’s existing winding. Incorrect winding still needs visual inspection and correction.
What happens to isolated vertices?
They are omitted from the rebuilt OBJ because only vertices referenced by retained faces are exported.
OBJ の穴埋めは安全ですか?
単純な境界には有効ですが、複雑な穴や自己交差は Blender 等で確認してください。