SO think of his CNC as having a table that moves in x,y,z.

X moves left and right. Y moves forward and back. And Z moves up and down. With a lessor software, it wants you to draw things flat, then it takes the Y value and makes that value "ROTATE" the workpiece. essentially making the surface of a cylinder "Flat".

Its different than the unfolding stuff for paper or sheetmetal. It's more a toolpath thing. And you cant "Unfold" a 3d model in this manner.

I hadnt tested his theory though. But if it worked that way, and it could be done on the cad side, it would be a much sought after tool! :O