Next up is to cut the front sheet.
In order to cut-out all of the openings for the 5.25-inch drives accurately, a custom router template is required. I used .5x1-inch u-channel and .25x1.25-inch flat bar to frame the openings on .5-inch particle board.
The aluminum bits guided my flush trimming router bit.
The aluminum bits were removed and the particle board template was used to cut the .10-inch thick aluminum sheet.
Now I just need to square all of the corners and cut to width. Ugh.