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So far it has flawlessly repaired 5 music CD's and one computer program CD. The computer disk had a deep scratch and would hang up at a certain point in the program. This product works as advertised. Now it works fine.
I've also used this to fix every damaged DVD I've rented from Blockbuster. No more returning movies because they skip. This fixed a fairly deep scratch to a CD I just bought, which I accidentally damaged while putting the CD back in the case. Fixing a CD or DVD takes only about 5 minutes.
Also, do not expect it to remove any scratches with any depth. These marks will not cause any problems when they are in a radial direction because of the error correction bits on the disk; but if they were in a circular direction, they could cover all the error bits for one piece of data. You might be able to get rid of them will a lot of work using the polishing strips provided with the product (which are essentially sand-paper), but once again you will be adding micro scratches to the surface of the disk.As for the protection portion of the product, all it really does is make the disk surface anti-static.
You do need to bring the disk close enough to your face to see these micro scratches though. Thus you should not get a bunch of dust sticking to the disk. Okay first of all, if you expect the repair portion of the product to make the play surface of your disk look like new, you will be sadly disappointed.
This is why it warns you to make sure you buff in a radial direction. I tested the product on a CD-R that had some scuffs. It removed the scuffs, but it leaves lots of little micro-scratches in the direction your buff the disk.
If you are expecting some miracle protective coating to stop the disk from being scratched when you drop it on the road accidently, you mine as well look somewhere else.
You can tell the difference in the way things are returned, and the number of things we have to discard. This product is very good on small superficial scratches, and I use it as an everyday cleaner, just as precautionary measures. My job is to manage a small library audio visual department. I have looked for things to take care of the damage done to a fairly good size DVD collection, that really takes a beating. Not for deep scratches, but a good product anyway.
After a few minutes of buffing, _68_ of the 70 minutes of music on the CD are now playable without so much as a slight hitch. (I'm hopeful about the remaining 2 minutes). I bought this item to repair a CD so damaged that my CD player wouldn't even recognize that the thing was in the drive (let's just say "asphalt and a six-year old" and leave it at that). So count me among the believers.
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