My son asked me to make him a frame to wall mount his CD's.  He wanted four of them.  He doesn't own any CD's.  I don't understand kids.  Nevertheless, this is what I made up after not being able to find something else online.

The frame is in two parts ... the main frame and the back bar.  

The CD slides in from the back of the main frame.  There is a front ridge that keeps the CD from sliding all the way through.  

The second part is a snap-in back bar to keep the CD from falling back out.  Therefore, I would not suggest printing the back bar with any more than 15% infill as it needs to remain somewhat flexible to insert and remove.

To insert the back bar, you have to bend it a bit to get it into the slots at the rear.  When you let go, the back bar will snap straight again.  Make sure the bumps are pressed up against the CD and won't be touching the wall, or the frame will not sit flush against the wall.

The hole in back to hold the frame was made for a simple finishing nail, which is how I plan to mount it. That way I am not leaving a screw hole in the wall when the frame is removed.  A small screw will also work.  You can make the hole in back a little larger if you want with your slicer, as I made the hollow in back large enough to accommodate that if you wish.

You will notice one of my photographs is a screen shot from my slicer.  I printed the frame on a 45 degree angle.  The finish on the frame comes out much nicer (on my printer anyway) when I print at a 45 degree angle like that. 

For printing, I used:

• Orca Slicer
• 45 degree angle for main frame
• Tree Auto supports
• Auto Brim
• 15% infill for both the frame and back bar
• PLA

It took, with the brim and supports, approximately 90.74 grams of PLA filament.  The model itself took 75.4 grams of filament.