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Re: A couple of questions for all you CD demagnetists out there.

RE #1 Doesn't seem to last an entire CD, as if the effects are fading fast.

RE#2 This tweak is reducing the electrostatic charege on the CD, and may make it easier for the CD transport to servo track the data spiral, without having to fight the static electricity generated by spinning polycarbonate plastic through the air.

RE #3 At $40, this is not so costly, and it does seem to do as ggod a job as the Bedeni, etc.

BTW, the whole "demagnitization" thing is a misnomer, my take is that the huge magnetic fields generate enough current within the aluminum to heat the plastic locally, and casue any manufacturing stresses (like when they pry the polycarb out of the mold, and when sputtering the aluminum onto it) to relax, and allow the edges of the pits and lands to be more defined than before.

I believe I was one of the first to offer this theory, and wrote it in to Sterophile in the letters section ,which they published. This was some years ago.

Jon Risch

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