I have made such a container for my ATO due to size constraints. Best is if you have a router table that can get real straight nicely finished edges. I used a nice table saw that gave straight edges. As jim said the acrylic is expensive unless you have hook up with volume. I got mine at skycraft which is a surplus supply place. Not the easiest of process weldon makes a series of acrylic bonding (supplies) as I was not worried about looks rather sealing I used a goopier version which leaved more residue but I had success in making.