removing candle wax from CD (recorded side!)

Discussion in 'DVD Video' started by doorrag, Sep 29, 2006.

  1. doorrag

    doorrag Guest

    I know I shouldn't have left it where it could happen, but I did. Can
    anyone help?
     
    doorrag, Sep 29, 2006
    #1
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  2. doorrag

    Impmon Guest

    Very hot water (tap, not boiling from kettle) may help soften the wax.
    Then wipe it with a towel to clean it. If by bad luck you have the
    type of synthic wax that only melts at higher temp, you'd probably
    risk melting the CD before the wax comes off.
     
    Impmon, Sep 29, 2006
    #2
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  3. doorrag

    gerry Guest

    You did not indicate whether it was a pressed CD or a CD-R you made.
    For wax, the best thing is to put the CD in the freezer. The wax
    should lose any adhesion it has to the surface after a few hours. You
    may still have a problem, if the pits are clogged, something you will
    only be able to find out after you try to play the CD, after letting it
    warm to room temperature.

    For a home recorded CD-R, toss it, the dye will be messed up whatever
    you do.
     
    gerry, Sep 29, 2006
    #3
  4. doorrag

    Company Man Guest

    Try citrus based, nontoxic Goo Gone!
     
    Company Man, Sep 29, 2006
    #4
  5. doorrag

    GMAN Guest

    Run the disk under very warm water, after the large peice falls off, you can
    then use a soft cloth to wipe the residue off. Make sure you do it in an
    outwards motion, not in a circle.
     
    GMAN, Sep 29, 2006
    #5
  6. doorrag

    GMAN Guest

    It's not like a phonograph. There are no pits to clog.
     
    GMAN, Sep 29, 2006
    #6
  7. doorrag

    doorrag Guest

    Thanks everyone for all your kind suggestions. I used hot water
    followed by cloth (from the cenrte out!) and tootpaste. All's OK now!
     
    doorrag, Sep 30, 2006
    #7
  8. doorrag

    gerry Guest

    GMAN: It's not like a phonograph. There are no pits to clog.

    What are you talking about? Phonographs records have spiral grooves of
    varying depths which affect the output of the magnetic pickup. CDs has
    pits (and lands), which are the physical equivalents of zeros and ones.
    See the article extract below.
    -----
    discs are replicated in mass quantities using a master created from a
    source recording. This may be either audio (CD-Audio) or data (CD-ROM).
    This method is used in the mastering of CDs, and does not include blank
    CD-Rs or DVDs, although these are made using similar methods.

    A compact disc (CD) can be used to store audio, video, and data in
    various formats which are defined in the Rainbow Books. A CD is usually
    manufactured in a class 100 or better clean room or self contained
    clean room on the finishing line. A CD can usually be manufactured
    within strict manufacturing tolerances for US$1 or less.

    CD mastering differs from burning in that the pits and lands of a
    mastered CD are moulded into the CD, rather than being 'burn marks' by
    a CD burner.

    ----

    If blank CD-Rs do not use dyes on the recording side, you can post what
    method is used by blank CD-Rs to store information. If you write that
    the dye on the recordable surface is impervious to heat, say from hot
    wax, you will get a lot of laughs.
     
    gerry, Sep 30, 2006
    #8
  9. doorrag

    GMAN Guest


    What i was trying to tell him was that the pits and lands are not exposed like
    a grove is on a phonograph.
     
    GMAN, Sep 30, 2006
    #9
  10. doorrag

    Impmon Guest

    Well, yes CD do have pits but the entire surface are also sealed so
    they are protected. Dust and debris on phono can cause the player to
    skip or worse, and are sometimes hard to clean without causing further
    damage. CD surface are easier to clean.
     
    Impmon, Sep 30, 2006
    #10
  11. doorrag

    JoeBloe Guest

    The hot water can kill the recorded data on the disc before even
    normal wax melts.

    Recordable CDs do NOT take to heat very well. Data loss is a given.
    The only thing that saves one from data loss is CRC coding, but it
    doesn't work if it is gone too.
     
    JoeBloe, Oct 1, 2006
    #11
  12. doorrag

    JoeBloe Guest


    They are STILL NOT exposed to the outside world.
     
    JoeBloe, Oct 1, 2006
    #12
  13. doorrag

    JoeBloe Guest

    They have a dye layer INSIDE the disc, and it is actually closest to
    the NON-record side.
    The dye isn't affected. Any impingements made on the dye layer by a
    laser will relax, rendering them as zeros, when heated to a certain
    point.

    The wax NEVER touched said dye layer. HEAT is the problem. The
    record layer is SEALED inside the disc.
     
    JoeBloe, Oct 1, 2006
    #13
  14. doorrag

    JoeBloe Guest

    On a pressed disc, the laser cuts a master in glass, so the pits are
    hard, sharp pits which then stamp the plastic gobs to become a disc
    ready for metallization.

    A recordable disc merely gets "impinged" upon by the laser's heat
    (especially the RW types). The pits are more like hills and valleys
    and there are no hard cliffs like with the glass masters for pressed
    discs. This is why earlier, single power level laser diodes caused
    read problems when the discs were burned at too high a speed, as the
    contrast ratio gets reduced as the "laser on pit" time decreases. No,
    they have multiple power level lasers to make the faster turning
    record sessions receive more light energy to maintain a valid contrast
    ratio.
     
    JoeBloe, Oct 1, 2006
    #14
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