not sure if this technique works on NURBS. im sure it does.
but for polygons >
to create a hole. Create a cyclinder to the size u want. place it in the position on the geometry u want the hole. (make sure its right in)
Then select the geometry, shift select the cyclinder. then go to
polygons > booleans > difference
however u may have problems when smoothing, so although this is the easiest technique, i wouldnt recommend unless your not smoothing it
hope this helps
those who succeed are only the failures that never gave up.
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