Grinding and Polishing Damaged DVD and CD's
The most common damage which occurs to DVD's or CD's is scratching. This is because the disk surface is comprised of a relatively soft polycarbonate plastic. The most effective technique for removing this damage is by grinding and polishing. The number of grinding and polishing steps is dependent upon the depth of the damage.
The following diagrams shows the various labels for a single layer DVD. The only difference for a double sided DVD is that it has a second reflective layer on the backside so that data is recorded on both sides. Grinding and polishing damage out of the polycarbonate plastic is easily accomplished with silicon carbide grinding papers and alumina polishing abrasives on polishing pads.