Tuesday, December 1, 2009

Kates Playground 2010 Stream



RETRIEVE A scratched CD.

A method easy home run.

In more than one occasion we had to throw the odd CD with information of interest or a little game for the computer because of scratches on the surface of the polycarbonate, ie face away from the plating where the labels are written .

When trying to read a CD with a line that can be deep or shallow with many stripes, just the CD in our PC can not read it and eventually we reported a problem in reading. The source of the trouble is that the laser beam is deflected by the line as a prism or diffusing the light beam by preventing the reflection of it in the plating return to photo diode receiver.

A less drastic solution to throw our CD is trying to erase the lines or polishing the CD using either toothpaste or a polishing compound silver ornaments.

's worth a try as we lose nothing by doing so and if we can win instead of just throw our valuable CD.

The intention of this post is to explain my experience with it, since I have used this procedure on two occasions (the third to make the post) with satisfactory results. Getting a CD player could read them allowing me to backup information.

For the purposes of this procedure manual is to be a little patient, because the speed with which they can eliminate the stripes is slow to negligible values, depending on the employee polishing the optical surface can be a bit dull due to " grain "of the compound that we are using to polish, if very fine, polished face of the CD will be perfect.

This procedure is simple, we only need silver polish, or abrasive paste or liquid with fine-grained, soft, clean cloth, and scrub hard surface damaged. Never apply this procedure on the side of the platinum or labels. If the line is on this side and "started" the silver of the face, we lost the CD.
Also be careful and treat it possible that the platinum layer is not affected during this procedure, I mean, come off at the edges of the CD or the central area near the hole spin because the cleaner- polish we use.

By reducing the lines to the point that they are only a shadow of what they were, the laser light is diffused CD or refracted slightly, allowing the player to read the CD. Achieved, it is best to perform a backup.

For this test, use a CD in good condition that we painted intentionally.
The following images show step by step method of recovery:
image of the CD browser.


original CD surface.


scratched surface of the CD, in this case was intentional to show the procedure.


Note that the transparent surface was very scratched and some deep scratches.

To minimize the risk of damaging or scratching the silvery side of the CD, put it on a soft, clean, dust free and supported on a flat surface.


We added the silver polish.


precedes polishing, scrubbing and replacing the surface polish if necessary.

We do
making circles around the surface to be polished to avoid leaving a pattern of polishing.


Shortly after starting the polishing process can see the improvement in scratch.


Each time you want to check the progress of polishing, retired with a soft cotton cloth, clean and dry the traces of silver polish.


polishing final appearance.


With the polished surface, the CD / DVD shows the contents of the CD that had not recovered could be shown.


The method works because the grinding grubbed a thin layer of transparent optical plastic eta CD is removed from the line, to be polished or at least very shallow scratches, the CD / DVD will have no problem reading it again. You can take the opportunity to make a backup CD.

As shown, the procedure is simple and economical and best of all is that we could save the information contained on the CD.

polished quality will be determined primarily our own standards of work and even with good patience or using a machine to help us with the polished surface quality stay the same or better than the original.

Obviously depending on the damage to the CD in the clearcoat, you may not achieve enough to polish the CD is read by the reader's computer, however, as I mentioned, it is worth trying.

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