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Select an object. >
Create panel > 
(Geometry) > Body Objects > Object Type rollout > Body Cutter button
In addition to cutting Body Objects, other tasks you can accomplish with the Body Cutter tool include the following:
- Break apart a stock object into elements of Body Objects or into separate Body Objects with cutters that are either solids or surfaces.
- Use a single or multiple cutters on one or more stock objects at the same time.
- Perform a volume decomposition of a set of cutter objects.
- Use a single cutter many times without maintaining the history.
The Body Cutter Object is a 3ds Max object that has a permanent sub-object history and can be edited in much the same way as an editable mesh object.
- Pick Cutters
- Click this button and then select the objects that will be used to cut or slice up the stock objects.
- Pick Stocks
- Click this button and then pick the objects to be cut up by the cutter objects.
You can use a cutter as kind of a sculpting tool where you apply it repeatedly to cut the same object. In this case, the extraction options provide some convenience for you so you do not need to go through the Body Object to get separate objects.
- Auto Extract Body Objects
- Automatically extracts the result when you select a stock object. It does not maintain the stock as a sub-object (operand) but edits it and replaces the object with the result of the cut. This allows you to quickly cut, then move the cutter and cut again.
- Group Extracted Results
- Combines resulting Body Objects into separate groups automatically based on their classification. Produces up to three groups: StockOutsideGroup, StockInsideGroup, and CutterOutsideGroup.
Cutting Options group
- Stock Outside Cutters
- The result contains the parts of the stock outside of all of the cutters. This option gives you a similar result to a Boolean subtraction of the cutters from the stock objects.: Removes (detaches) selected object from its parent object and creates a new object.
- Stock Inside Cutters
- The result contains the parts of the stock inside one or more cutters. This option gives you similar results to a Boolean intersection of the cutters and the stock objects. There is some difference because each cutter is treated individually.
- Cutter Outside Stock
- The result contains the parts of the cutters that are not inside the stock objects. Note that the cutters will cut each other if they intersect also.