Sheet Lightning is a specialised engineering 2D/3D CAD System for creating and unfolding sheet metal designs for fabrication or manufacture. It handles everything from simple cylinders, cones, rectangular ducts and ovals, to adapters, adapting any of these section types, interections and multi-intersections between of any of these types to any level of complexity.

All pieces can have centre line offset and oblique or skewed sections. Simple designs are handled with ease through a second 'parametric' environment that requires only the typing of key dimension values to modify the design. A library of standard designs is included. Futhermore all designs created using the full 3D system can be automatically analysed and converted to a parameteric form, then saved as extensions to the existing library.