@vegastarr@Thekeksociety They only problem with the technique is that the laser projects from one direction. I am sure they had way more advanced lasers or plasma technologies that could carve 3D volumes with holes and cavities behind them.
here magic and the progress of my new plugin NitroSplineModel create model easy with just draw spline move the points and use some generate object and you done then use the correct setting for every spline to change the shape enjoy the modeling ;) this plugin release in next days