the red lines，Split body produce。 How to remove quickly, or not produce？
Try replace face?
I try ,but not work
can you share the file ?
Hi @ice , It looks like this was a gear where you split then removed a piece.
After you Replace Face as @PEC suggests, can you delete one of the faces? Sometimes you don’t have to replace face, but often you do. See this video with an “octagon gear”
