Making Extrusions solid

In order to do a Boolean Intersection, the extrusions need to be solid. How do I make Extruded Curves into solids? I’m very new at this and would appreciate any advice.


Hi Mairead - if the extrusion is already in place, and has planar openings at the ends, the Cap command will close it. To make a solid extrusion from a closed planar curve, make sure Solid=Yes at the command line in ExtrudeCrv.


If the curve used to create the extrusion is closed but not planar, then EdgeSrf (prefered if it works) or Patch can be used to close the ends. Then Join with the extrusion surfaces to form a solid.

BooleanIntersection does not always needed solids, at least in Rhino for Windows.

Thank you so much for all your help!

Thank you! Very appreciated