The 3D constructor model was made from 136 types of 3D models of elements (bricks). I modeled each detail based on a real constructor detail. Using a tape measure, I found out the approximate dimensions and transferred them to Blender 3D, to the library of elements. And immediately, literally, I assembled a complex 3D model of a real constructor according to the instructions directly in the Blender program. I have assembled the same ship for real.