By definition, the sorts of changes that the Sheet Metal 'Clean-up' utility makes to a model cannot be captured as 'features'. These changes generally involve cleaning-up the topology of a model, down at the edge and face level. Keep in mind that the changes being made are not specifically creating any sort of 'sheet-metal' features, rather it's simply making sure that the solid has consistent thicknesses, that what are represented as potential bends are consistent in terms of inside/outside radius, etc. Once this has been done, if it was succesful you can then proceed to using the 'Convert to Sheet Metal' function which WILL create a Sheet Metal 'feature' which will then be able to be flattened as well as able to accept new Sheet Metal features such as Flanges, Cutouts, Beads, Louvers, etc.
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA Siemens PLM: UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.