In this tutorial you will see how to create easy cut for solid object with PTC Creo Parametric. You can create Datum Plane or Surface feature and then select Solidify Feature = easy and quick :)
Solidify Feature - easy cut for solid object
but profile cut is used in EFX.
how to use that (one used in EFX) profile cut and save it in UDF?
please provide tutorial for it.
The Solidify feature you can use for everyday engineering - no only for Profiles - you can create Datum planes or Surface feature and then you can "CUT" model really easy :)
EFX UDF feature is driven by external program - you can use a UDF only in Part mode - but I like your idea :)