My blue-belt blueprint for purple science included electric furnaces and rails, but there wasn't enough room for them so I saved them for later. I rearranged some iron factories, set down electronic circuit factories, and rearranged iron factories some more, before setting down the factories for red science, batteries, green science, military science, blue science, and purple science, as well as speed and productivity modules above them. Next came oil and coal processing to the left of copper (making plastic, sulfur, sulfuric acid, and grenades), and then low-density structures, advanced circuits, and processing units below it, and then finalizing copper factory placements. The first thing I set down was rough placements for copper and iron, with space for circuits in between. I started with blue-belt designs I had made for general use and worked from there.