Metal sheets can be curved in cylindrical, conical and twisted form. Drills, pockets, cut-outs etc. can be done in flat condition with 3-axis-machines. Compared to conventional roll forming, where expensive 5-axis machines with complex clamping devices and long lead times are required, remarkable cost benefits can be realized. After bending with Deharde Polygon Forming® the dimensional accuracy is warranted. Forming process is performed in one throughput, with high repeat accuracy and 100% NC controlled. The high-quality polygon-formed products are already on duty in aviation and space.