CorBlimeyLimey
Thank u for the soon help, It works as your guide, I think it more like a bug without set it in enable default. Similiar problems have more in forming tools. For example,when i unfold a sheetmetal with counter sink emboss, the hole can't be unfolded at all.I have to calculate...
My work is using Solidworks 2008, I am trying to use forming tools on a sheet metal part. When I try to "drag and drop" the forming tool, Solidworks shows message: "Are you making a derived part?" Basically, I can not get the forming tools to work. Any help is appreciated.