So I'm working on a program to help with designs of LPDAs. I already have output loadable into the 3D CAD system Rhino 6. Works by simply outpting text to run as a script inside that CAD. But Rhino 6 costs $900, so not an option for very many. So I am asking if any of you that use maybe FreeCAD, Solidworks, or one of the others might volunteer a few simple pointers toward helping me to support the 3D CAD platform that you prefer. As a for instance, here is a screenshot from Rhino 6, with my own QTH from Google Earth set as the background for the top view and scaled to meters. Shown is an 18-element LPDA for 12-17m, 18m long, with guy points projected 1 m out from element 1.