Well, I haven't been doing it lately! I used to buy the CD, polish the CD, green the edge, and with the polish cloth use up the shiner on the case. Worked well.
Now, with all the second hand $2 CDs I have been buying, for awhile i was replacing the cases with $0.10 NOS cases I had.. Now, I just do not bother with fixing the cases.. I just pile up the CDs.. Maybe sooner or later i will build another shelving unit to hold the 'extra' 2,000? (i do not even know how many!) CDs I have stashed.