Sheet Lightning Demo 

Sheet Lightning is a specialised engineering 2D/3D CAD System for creating and unfolding sheet metal designs for fabrication or manufacture. It handles cylinders, cones, square-to-round adapters, ovals, intersections and mutli-intersections.
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Optimumcut-1D LITE 

Optimumcut-1D is a Stand-Alone (1 Dimension) Cutting List Generator and Linear Material Optimization Software Tool which calculates and displays exactly how to obtain the best yield from stock lengths of profile. Obtain The Maximum From A Minimum
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ShapeBook with 2D3DSteel 

A structural steel reference and AutoCAD drafting tool for steel construction. View dimensions and properties. Search shapes by property values. Convert shape lists between US and metric. Based on AISC Manual of Steel Construction LRFD Third Edition.
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