Step 1: Gather Materials and Tools
Wood - Choose wood based upon the tools you possess. 1" nominal is about as thin as you can go. As with just about everything I do, I used Home Depot super strips and planed them down to thickness. If you don't have a table saw or planer, consider furring strips your ideal choice.
Small hinges (6)
Table Saw (Optional)
Router Table (required)
Wood Glue or Polyurethane (Gorilla) Glue
Large Clamps (2' wide)
Straight Cutting Bit
DVDs 5/8" (.57" X 4-3/8" X 7-1/2")
CDs 7/16" (.41" X 5-5/8" X 4-15/16")
Step 2: Design Your Rack
The images for this rack are three CD's wide (roughly 18" per panel). Any more than that and the rack will become a bit unwieldy. The rack height will obviously depend how many CDs/DVDs you will want to store. This rack is just under 45" tall, it was intended to be much taller, but production problems abound.
The original design is below.
Step 3: Cut, Route, Repeat
The sides have the deeper router and the ends of each bar are shaped into tenons to fit deeply into the sides. These will be glued and clamped in place when assembled.
The cross section image has been added to remove some of the confusion the explanation may have caused.
Step 4: Glue, Check Square, Clamp
Use plywood blanks that are sized at 4-5/8" (7-1/4" for DVDs) that can set in between the bar for squaring/gluing.
Check square after each panel is assembled, it is imperative that the bars are parallel. Rush this step and you will be sanding a great deal.
Step 5: Paint, Attach Hinges and Enjoy
My girlfriend chose spray paint in various colors with random and some "planned" shapes. The drips obviously weren't planned, but who am I to judge. At least she has a great taste in music.
The hinges should be attached to each panel to create an accordion fold. This will make the panel easier to store, and more stable.
Thanks for looking!