To complete the properties of a welded body under SW2014, I use the Smartproperties of the mycadtools suite.
However I have a subcontractor who doesn't have the mycadtools (poor !!), so I'm looking to fill in the properties of the welded bodies via the "2014 properties form editor". Of course, this is very limited compared to Smartproperties.
What I can't do is from SolidWorks, it's to go from the part form to the welded body form.