Cleaning solids
You can remove redundant edges or vertices from solids when they are not needed.
To clean a solid
1 Do one of the following to choose Clean ():
On the ribbon, choose Draw 3D > Clean (in Solids Editing).
On the menu, choose Modify > Solids Editing > Clean.
On the Solids Editing toolbar, click the Clean tool.
2 Select the entity you want to clean.