Facet Modeling > Wrap Handling > Shoot Through > To Use the Shoot Through Command
  
To Use the Shoot Through Command
The Shoot Through command removes triangles in a straight line through the wrap in a manner similar to drilling a hole. The direction in which the hole is drilled is based on the orientation of the model. In addition to the selection area, other internal structures may be removed. The operation propagates through the model until a change in point density is reached.
1. Click Wrap > Shoot Through.
2. Select a set of triangles.