Now it’s time to roll up our sleeves and dive into our main solver code. In this section, we’re going to be doing the bulk of the work to update the 2D solver we wrote previously. We’ll also be implementing all of the transformation and stiffness matrix theory we whiteboarded earlier. 

Once you’ve completed this section you will have converted your 2D cable analysis code into a 3D solver…and we can start experimenting with some structures.