Working on my project, I was able to come up with the frame and full list of bill of materials and measurements for my Disc Golf Cart. I decided to use T-joint extrusions (80/20) which is easy to assemble together. I first started out measuring my disc golf bag that I will be held by the cart. I then drew up plans for the shell that I will have to manufacture. After I was satisfied with how it looked, went to McMaster Carr to find all the parts I needed. They are expensive but they have everything I was looking for and for everything else that is not the metal I will source from somewhere else. I filled out a complete bill of materials and double and triple checked to make sure I could manufacture the whole frame with the parts I ordered.  The parts should come in Wednesday, then I will be able to manufacture and then I can move to the side and back paneling that is where the main portion of my aesthetic is going to be. I am going to use acrylic for the side paneling and maybe some sort of webbing for the back. So it will be lighter and will have a cool pattern on the back. Below is a screenshot of the materials I that purchased and some drawing of my fame in my sketch book,