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Thread: Scratch removal...

  1. #1
    Craftsman
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    Scratch removal...

    Apologies if this has been asked before, but how can I get rid
    of a hairline scratch, about a quarter of an inch long, from
    the glass of one of my watches, please...?

  2. #2

    Re: Scratch removal...

    Assuming it's a mineral glass crystal, you make a paste of glass polishing powder (Cerium Oxide c. 3micron, also sold as Diamontine by watch material houses).

  3. #3
    Craftsman MintG's Avatar
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    Re: Scratch removal...

    I never realised that this was possible. You learn something new every day!

  4. #4

    Re: Scratch removal...

    Yup the glass industry have been using Ce02 for years you can also use rouge, tin oxide and colloidal silica for final polishing. Always use plenty of water when polishing glass, glass doesn't like lots of heat, to hot and it CRACKS :lol:

    BEWARE Tin oxide is nasty stuff, tin also known as Stannium is very bad for the lungs, if you use Cerium wear a mask and gloves it contains Thorium!

    Regs

    Bry

  5. #5
    Craftsman
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    Re: Scratch removal...

    Thanks for the suggestions, I have come across something
    I think is called "Polywatch", it's on the Bay at 3.99,
    does anyone know if this is any good...?

  6. #6

    Re: Scratch removal...

    Quote Originally Posted by JOHNG
    Thanks for the suggestions, I have come across something
    I think is called "Polywatch", it's on the Bay at 3.99,
    does anyone know if this is any good...?
    Polywatch is excellent...

    ...for acrylic crystals.

  7. #7
    Craftsman MintG's Avatar
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    Re: Scratch removal...

    Surprisingly Autosol also works on acrylic xtal. Many claim better results than Polywatch. I have only tried Polywatch so have no point of comparison, but a quick google search will find a site that has. :wink:

  8. #8

    Re: Scratch removal...

    The biggest thing with acrylic and any glass polishing is you need to develop some heat but not to much!

  9. #9
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    Re: Scratch removal...

    Dumb question, but how can I tell if it's Acrylic, or whatever else
    watch 'Glass' is made from... :? ?

  10. #10

    Re: Scratch removal...

    Acrylic often known as PMMA (Polymethylmethacrylate) can be easily scratched with a screwdriver, a mineral glass(basically window glass or soda-lime glass) is much harder tho it can still be scratched with a hardened steel screwdriver, sapphire is difficult to scratch!

  11. #11
    Craftsman
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    Re: Scratch removal...

    That sounds drastic, I don't want to take a screwdriver to test what
    they are made of, make it worse. I tap it with my fingernail, if it
    sounds 'hollow' I assume it's acrylic, if a 'solid' sound, it's glass,
    Am I right with those assumptions, or is there a better way...?

  12. #12

    Re: Scratch removal...

    :D you can probably mark the acrylic with a wooden cocktail stick, and is easily removed with toothpaste.

  13. #13
    Craftsman
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    Re: Scratch removal...

    you can probably mark the acrylic with a wooden cocktail stick, and is easily removed with toothpaste.[/quote]


    Toothpaste...! Is that for real...?

  14. #14

    Re: Scratch removal...

    :shock: Yes, it's the hydrated slilica basically fine sand that cleans your teeth.

  15. #15
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    Re: Scratch removal...

    Thanks for that.
    "You learn something new every day..."

  16. #16

    Re: Scratch removal...

    I've bookmarked this page! It's great. Thanks

  17. #17
    Master zelig's Avatar
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    Re: Scratch removal...

    anyone tried T-Cut ?
    Usually works OK on plastics (but I've never tried it on a watch)

  18. #18

    Re: Scratch removal...

    Quote Originally Posted by zelig
    anyone tried T-Cut ?
    Usually works OK on plastics (but I've never tried it on a watch)
    Yes! any of the fine polishing pastes or liquids for car bodywork can rid watch acrylics of fine scratches. :)

  19. #19

    Re: Scratch removal...

    Every day is a school day!!!!

  20. #20

    Re: Scratch removal...

    Thanks for this post.
    Do you polish the glass with watch body attached or seperately?
    The reason for the question is that I am not sure I have the confidence to disassemble the watch yet.

  21. #21
    Journeyman
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    Re: Scratch removal...

    I've just tried using toothpaste on an old watch from ebay, and it worked amazingly well. Thanks for the tip.

  22. #22
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    Re: Scratch removal...

    Quote Originally Posted by km9
    Do you polish the glass with watch body attached or seperately?
    The reason for the question is that I am not sure I have the confidence to disassemble the watch yet.
    The scratches are usualy on the outside of the 'glass', so
    there's no need to take your watch apart... :wink:

  23. #23

    Re: Scratch removal...

    excellent info - just joined here and i did not know glass could ever be recovered

  24. #24
    Journeyman
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    Re: Scratch removal...

    Using toothpaste on acrylic, what sort of cloth should you use? Anything?

  25. #25
    Craftsman
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    Re: Scratch removal...

    Cotton wool. Or makup removal pads.

  26. #26

    Re: Scratch removal...

    Well you learn something new every day! I guess the side effect of toothpaste use for scratch removal is a minty smelling watch :lol:

  27. #27

    Re: Scratch removal...

    Quote Originally Posted by triumph coupe
    Well you learn something new every day! I guess the side effect of toothpaste use for scratch removal is a minty smelling watch :lol:
    And no plaque.... :D

  28. #28
    Craftsman
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    Re: Scratch removal...

    I've used tooth paste before, works great if you've got the patience.

  29. #29
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    Re: Scratch removal...

    Quote Originally Posted by CommanderJameson
    Quote Originally Posted by JOHNG
    Thanks for the suggestions, I have come across something
    I think is called "Polywatch", it's on the Bay at 3.99,
    does anyone know if this is any good...?
    Polywatch is excellent...

    ...for acrylic crystals.
    +1 I have also used toothpaste

  30. #30

    Re: Scratch removal...

    Quote Originally Posted by sangman
    Quote Originally Posted by CommanderJameson
    Quote Originally Posted by JOHNG
    Thanks for the suggestions, I have come across something
    I think is called "Polywatch", it's on the Bay at 3.99,
    does anyone know if this is any good...?
    Polywatch is excellent...

    ...for acrylic crystals.
    +1 I have also used toothpaste
    Don't try the reverse, however.

    Polywatch tastes worse than it smells.

  31. #31

    Re: Scratch removal...

    Brasso on a damp rag for acrylic with a final polish with Tcut.

  32. #32
    Craftsman
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    Re: Scratch removal...

    Can we extend this thread to tidying up the metal as well? I have a few scratches on a steel bracelet I would like to get rid of!

    Bracelet is a mixture of polished steel and brushed, any ideas?

  33. #33

    Re: Scratch removal...

    Quote Originally Posted by JOHNG
    That sounds drastic, I don't want to take a screwdriver to test what
    they are made of, make it worse. I tap it with my fingernail, if it
    sounds 'hollow' I assume it's acrylic, if a 'solid' sound, it's glass,
    Am I right with those assumptions, or is there a better way...?
    Use polywatch. If it works it is acrylic, if it doesn't it is glass (you'll see an improvement almost immediately with acrylic). For 3.99 got to be worth finding out this way rather than putting a hardened screwdriver near your watch.

  34. #34

    Re: Scratch removal...

    Quote Originally Posted by drpauljones
    Quote Originally Posted by JOHNG
    That sounds drastic, I don't want to take a screwdriver to test what
    they are made of, make it worse. I tap it with my fingernail, if it
    sounds 'hollow' I assume it's acrylic, if a 'solid' sound, it's glass,
    Am I right with those assumptions, or is there a better way...?
    Use polywatch. If it works it is acrylic, if it doesn't it is glass (you'll see an improvement almost immediately with acrylic). For 3.99 got to be worth finding out this way rather than putting a hardened screwdriver near your watch.
    Touch it to your upper lip. If it feels cold it is glass, if it feels warm it is acrylic.

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