Please go through the attached image before you going to read my question.
In this attached image they created the detail view or 2D image using Digger tool or Detail view (actually I really don't know how do they do it !!). The two gears are shown in the image clearly "without" any border or any kind of background. also, they applied shadows to both the gears around their outer edges...!!
My question is "How to create such type of view without any border or background?"
Please help me out if anybody has an answer to this question.