The first step is to cut out the necessary pieces using a laser cutter. You can use whatever material you'd like, as long as it can be laser cut and glued together reasonably. I used 1/4" russian birch plywood, and I used the 60W Epilog machine at TechShop which has a 24" x 18" bed, so the files I attached are set up accordingly. It took a little over an hour to cut everything out, but that time will vary depending on the material and machine you're using. There are three attached files: top half.eps, bottom half.eps, and front covers.eps. You will need to print one copy of top_half.eps, one copy of bottom_half.eps, and two copies of front_covers.eps.
(Note: the "front covers.eps" file does not include the TechShop gear vectors that you see in the pictures, I added those as this particular rack was headed for the front desk at TechShop. This is the perfect place to add the design of your choice.)
(Another note: The layout picture only shows 6 of the 7 front covers required, and 6 of the 7 corresponding bottom pieces.)