Ive started drawing up the plans that came on the cd with the project arcade book. Im laying everything out in autocad so I will be able to transfer it to mastercam and have the parts cut on a cnc at work. Im also building a solid model to check the design to make sure its exactly what I want, and theres one thing I dont understand. Why is there a open space between the two back panels. Is it to vent heat or just for acess. I would much rather put in 1" x 4" rails plowed into the sides for support and make a solid two piece back with the lower part removable is this going to cause problems with heat? dont real arcade cabinets use a 1/4" back that fits into plows in the sides with a small acess panel at the bottom. has anyone made a inner frame from 2x4's for the panels to mount to are would that be overkill.