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 Parting Surfaces  | 
This command allows to create external Parting Surfaces.
Creation stages / Use:
Click the 
 icon or select the Split > Parting Surfaces... command from the drop-down menu.
Choose the expected Mode to use:
 Extension : Allows to "extrude" Parting Edges in a given direction.
 Planar : Allows to create "flat" surfaces.
 Loft Without Guide : Allows to create surfaces between 2 profiles / edges.
 Loft With Guides : Allows to create surfaces with guides and generatrix profiles / edges.
Once done, validate 
.
Available options:
Advanced options:
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 Allow you to manage the "acceptable" tolerance between 2 surfaces. 
 
 Allow you to manage the "acceptable" angular tolerance between 2 surfaces to proceed to an automatic Smoothing operation.  | 
Modifications / Additional information:
During their validation, the Parting Surfaces are automatically assigned to the Parting Surfaces set in the Entity tree.