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  1. #1
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    Default Will Ammonium Persulphate Etch Glass

    I've got some for making printed circuits

    but wondering if it will etch (corrode) glass
    Regards, Bob Thomas

    www.wombatsawmill.com

  2. #2
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    Default

    just been told that it WONT etch glass and taht its very dangerous stuff as well

  3. #3
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    South Oz, the big smokey bit in the middle
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    Default

    Quote Originally Posted by echnidna View Post
    I've got some for making printed circuits

    but wondering if it will etch (corrode) glass
    I'm wondering if you are thinking of trying to etch glass or whether you've spilt some and are hoping it doesn't

    Richard

  4. #4
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    Default

    I've got some and was just wondering if it would.
    It doesn't so I'll find something else.

    Thank to everyone for your valuable input
    Regards, Bob Thomas

    www.wombatsawmill.com

  5. #5
    Join Date
    May 2003
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    Kuranda, paradise, North Qld
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    Default

    Bob,
    AFAIK besides abrasive blasting and other mechanical methods the only thing that will etch glass is Hydrofluoric acid. This is extrmely nasty stuff. We used it in the boat yard to etch the ally before painting and the watered down wash up had to be collected in a tank full of marble chips before it could go into the drains. I don't know what strength is required for glass etching but I do know that the Ali-brite we used would mark windows. When I was looking at the OH&S stuff I read about a pool technician who spilt some concentrate on himself. He jumped in the pool straight away to try to neutralise it. They had him in hospital and whipped off his leg the same day but he was still dead within a week.

    Way back when I was screen printing a bloke I worked for got some specialist ink that had hydrofluoric acid in it as he wanted to print an etched logo onto glass. It may still be available now, but it's much easier to use a vinyl cutter to cut the logo on some "frosted" clear sticker to give the same effect. Otherwise you can get a mask made for your logo by a vinyl cutter, apply it to your glass and sandblast the exposed glass lightly.

    Mick
    "If you need a machine today and don't buy it,

    tomorrow you will have paid for it and not have it."

    - Henry Ford 1938

  6. #6
    Join Date
    May 2004
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    Pakenham, outer Melb SE suburb, Vic
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    Default

    I have one of those "201 formulas" books somewhere, will have a look for it, I thought it had a chemical recipe for glass etching.

    Will have a sniff around.


    Cheers..........Sean


    The beatings will continue until morale improves.

  7. #7
    Join Date
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    Default

    Good news - found it straight away.

    Bad news - it recommended hydrofluoric acid


    Sorry mate.............cheers.............Sean


    The beatings will continue until morale improves.

  8. #8
    Join Date
    Feb 2003
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    Default

    Thanks for the looking fellas,
    I WON"T use hydrofluoric acid. (or even Nitric)
    You don't feel it on the skin, just feels like water,
    until it sinks deeper and starts eating your bone away - then it hurts.
    Regards, Bob Thomas

    www.wombatsawmill.com

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