Entering in the block you can use the AddNgon command.
This would clean all the major extra lines.
still same
2.3dm (410.9 KB)

@su14 - You didn’t the first part: either go into block edit mode or explode the block.
-wim
thanks @wim @skysurfer
how to enter in block can you send video? @wim
Either double-click a block or run the BlockEdit command and select a block.
-wim
thanks @wim




