Create an Implicit Midsurface
Create one or more surfaces or volumes that sit between two implicit parts. This is useful for creating field-driven effects between two parts/surfaces or to create evenly spaced surfaces between two parts or surfaces

- 
                On the Implicit Modeling ribbon, select the
                        Midsurface tool.

The Midsurface guide panel is displayed.
 - Use the Target collector to select the implicit body that is the origin of the midsurface.
 - Use the Tool collector to select the implicit body that is the end value of the midsurface.
 - Select Mode: Single or Multiple to create a midfield based on a single or multiple iso values between the tool and target bodies.
 - Select Keep: Surface if you want to use the target body as the origin of the midsurface. Select Volume to set the field on one side of the isosurface as solid.
 - Select Fill: Regular to generate solid geometry, or select Inverse to reverse the generated solid and voided regions.
 - 
                If Multiple is selected, set the origin and number of
                    midsurfaces to create. 
                
                
- Select From: Medial Axis to place the origin of the midsurface between the target and tool, creating a symmetrical pattern. Select Target Surface to set the origin of the midsurface at the target.
 - Enter a value in the Count box to specify the number of surfaces to place between the target and tool.
 
 - If Single is selected, enter a value in the Iso Value box to set the position of the midsurface. The Iso Value is a percentage, where 0 is on the target surcace, and 100 is on the tool surface.
 - Enter a value in the Thickness box to set the thickness of the midsurface to generate solid geometry.