Frames shapes can be lofted, traced from full size Mylar patterns or CNC cut. The edges of the frame can be left square. Set the frames up on a level floor or strong back, using a server's sight, if necessary, to confirm a flat and level surface. A taut builder's line or wire can be used to mark a centerline for frame alignment. Set each frame centered at its station.
Male frames require the use of a plumb bob to confirm centerline alignment.
A plumb bob is used to check that each frame is set and held vertical. Diagonally brace and stabilize the framework. The accuracy of the building jig in important. Define the Edges and Corners of the Structure. This has proven to be an important part of the process.