The best suited datas for the production of stamping dies and engravings are the following file formats :
Vector graphics : converted to curves, with closed paths and without overlaps. Saved in PC format as . ai ( max. Adobe Illustrator version CS4) . eps (max. Adobe Illustrator version CS4 ) . cdr (max. CorelDraw version SE) or one of these formats packed in a PDF.
unsuitable are: Vector graphics from CAD programs in file formats such as . dwg, . dxf, . igs . stp are unsuitable, because they mostly contain 3D data, and if they were applied in 2D , the paths are not closed and built up of individual line segments.