Subtract and remove solid

Task area Boolean Operators

You can use this tool to remove the common volume of one or more solids or 3D surfaces from another solid or 3D surface, creating cutouts. The solids and 3D surfaces will be deleted.

Note: The solid from which a volume is subtracted retains its properties and attributes.

Tip: You can divide solids or surfaces along 3D surfaces; this deletes the surfaces used for division.

To remove the common volume of one solid from another while deleting the intersecting solid

1. Click Subtract and Remove Solid (How).
   

   Activate Subtract and Remove Solid in one of the following ways

   • Actionbar:Role Draft Task Modeling Task area Boolean Operators

   • Menu bar: Create Bonus Tools 3D Modeling

   • Palette: Tools Create area in the following module(s):

   3D Modeling

2. Start by selecting the solid (or surface) from which a volume is to be subtracted.
3. Select one or more solids or 3D surfaces penetrating the solid you want to change.
4. Right-click to confirm.
5. If the intersecting solids split the solid to be changed into discrete parts, you can decide whether you want to resolve the split solid into separate 3D solids.

   Note: 3D surfaces always split the solid; so there is no message.

   This deletes the intersecting solids or surfaces.

   Note: When you use polygonal elements as initial elements, Allplan creates polygonal 3D objects if this is possible. When you use initial elements with curves, Allplan creates general 3D objects (BREPs, NURBS).

   Note: You can use 3D solids to remove the common volume of a 3D surface; but this is not possible vice versa. You can divide solids or surfaces along 3D surfaces; this deletes the surfaces used for division.