Love-Hounds-request@GAFFA.MIT.EDU (09/20/89)
Really-From: Steve Schonberger <microsoft!stevesc@uunet.UU.NET> I've discovered a way to fix scratched CDs. I've done two this way and they both play now, and both were not playable (in the region of the scratch) before, so it works. One got scratched by falling off a stack of them, out of the box, and sliding down some concrete stairs, and the other was scratched by accidentally opening a portable and knocking it across the spinning center, so both were moderately severe scratches. ------------------------------------------------------------------------ Step one: Rub the scratched area with an eraser (the ones in the supply rooms for the mechanical pencils work well) fairly hard. Be sure to rub toward and away from the center, not in the direction of rotation! Step two: Blow away eraser crumbs as much as possible. Step three: Carefully brush away more eraser crumbs. Be very careful to try to remove all traces of eraser residue. Step four: Rub the fuzzy patch left by the eraser (to and from center) with cloth until most of the fuzziness goes away. I used flannel, since it is strong but not very rough. If there are still scratches deep enough to disrupt the play, repeat the job, but don't rub as hard with the eraser on later repititions of the erasing step unless the scratches are really deep. The idea of erasing again is to remove the deep scratches from the first erasing. ------------------------------------------------------------------------ Note that this doesn't do any good if the aluminum is scratched, though that is fortunately very rare, resulting from very nasty scratches to through the printed layer. You can still use the old "repair" method of buying a new one, of course! ------------------------------------------------------------------------ Maybe I should put an eraser, a piece of flannel, and instructions into a baggie and sell them for far too much money! -- Steve Schonberger microsoft!stevesc@uunet.uu.net "Working under pressure is the sugar that we crave" -- A. Lamb
Love-Hounds-request@GAFFA.MIT.EDU (09/21/89)
Really-From: adams%bosco.Berkeley.EDU@ucbvax.Berkeley.EDU (Jeffrey P. Adams) >Really-From: Steve Schonberger <microsoft!stevesc@uunet.UU.NET> > >I've discovered a way to fix scratched CDs. I've heard you can fix scratched CDs with turtle wax or the exuivalent. The whole idea here is to avoid refraction discontinuities in the clear stuff, and with wax, you just fill it in with some material (wax) which has more or less the same index of refraction, and buff it nice and purty. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Jeff Adams adams@math.berkeley.edu ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Love-Hounds-request@GAFFA.MIT.EDU (09/21/89)
Really-From: Jon Scheer <outback!wombat@rutgers.edu>
[Path: amtfocus!mcdchg!att!dptg!rutgers!mit-eddie!GAFFA.MIT.EDU!Love-Hounds-request]
Steve,
Here are two more ways to 'fix' CD's :
Method 1 :
Run tooth paste on the CD and 'polish' with soft cloth for a long
time (5, 10, 15 minutes; until the disk is dry and the grooves
filled in). The idea is that the tooth paste fills in the grooves,
reducing the *refraction* of light. Tooth paste is a very good
polisher (this from a friend who's dad is a dentist). With the
grooves filled in the light will pass through the tooth paste (the
tooth paste doesn't stay white; it turns clear with polishing) and
reflects off the metal as would in normal operation.
Method 2 :
Use car wax in place of tooth paste in the above procedure.
I have tried these methods and they fixed a CD. Well, the CD still
sounded awful, but it was Micheal Jackson's 'Bad' CD... The CD didn't
skip any more (until we threw it across the room). (A friend found the
CD along the road. Yup, it looked like someone threw it out the car
window. It didn't play at all until we 'fixed' it using the above with
tooth paste.)
Oh yeah, use some tooth paste like Gleem or such. CD's don't care much
about tarter control...
Jon
PS. Feel free to post this to the net; I don't have 'postability' from
my site. Thanks.
PPS. I get 4012510f the profits if you market this! ;-)
--
Jon C. Scheer
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"Have opinion; Will post."Love-Hounds-request@GAFFA.MIT.EDU (09/25/89)
Really-From: otter!dps@hplabs.hp.com (Duncan Smith) I have seen results obtained with a mild abrasive such as toothpaste. The idea is presumably that it partly fills in the scratch (Helping to eliminate discontinuities in refractive index) and partly makes it shallower by removing a thin surface layer. Duncan Smith
tjfs@tadtec.uucp (Tim Steele) (09/27/89)
In article <25185249@outback.UUCP> Love-Hounds-request@GAFFA.MIT.EDU writes: > Here are two more ways to 'fix' CD's : > > Method 1 : >tooth paste< > > Method 2 : >car wax< What's this doing in rec.music.gaffa anyway? The question is: which is better, tooth paste or car wax? Enquiring minds want to know! I haven't had much success with tooth paste, but I haven't tried polishing for 15 minutes as suggested! Tim -- tjfs@tadtec.uucp ..!uunet!mcvax!ukc!tadtec!tjfs Tadpole Technology plc, Titan House, Castle Park, CAMBRIDGE, CB3 0AY, UK Phone: +44-223-461000 Fax: +44-223-460727 Telex: TADTEC G