This project was designed using a program called Inventor. It was one of the most complex projects I had worked on up to that point, as it required creating multiple sub-assemblies to make the trolley. The difficulty came from the sheer number of parts involved. Once all the parts were made, I had to figure out how to put them together correctly in one file. This meant combining some parts in a smaller file and then merging that file with a master file so that all the parts could work together. In the end, I was able to finish the trolley you see below.