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Thread: Sealing a patina?

  1. #1
    Join Date
    Jul 2009
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    322

    Default Sealing a patina?

    Hi,

    I've been experimenting with liver of sulpher on copper and I keep finding that when I try to seal it with renaissance wax it flakes off leaving copper visible which isn't what I really want.

    Any ideas on how I can stop this or alternative sealers? I've also tried midas lacquer but that tends to dry quite visibly even if I blot it.

    I'd appreciate any help on this.

    Thanks

  2. #2
    Join Date
    Jan 2012
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    dear old Blighty - (in deepest Wiltshire)
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    Default

    I use Protectaclear.. love it. Paint it on - lasts really well. http://everbritecoatings.co.uk/small...ting-151-p.asp

  3. #3
    Join Date
    Oct 2012
    Location
    London
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    Default

    Jade Oil is what I've been advised and work well with me. i bought from Peter Dyson.

  4. #4
    Join Date
    Dec 2009
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    Central London
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    Default

    Coco, there are two things to consider here: the flaking and the sealing.

    1. When a patina is developed rapidly it also detaches in flakes. So keep your solution cold and diluted, to delay the darkening and rinse only in cold water. This will also allow you to see some in between coluors which you might prefer.

    The ultimate slowing down can be arranged by hanging the piece from threads in the fumes above the solution in a closed box and inspecting from time to time.
    Whatever method you use make sure that your metal is well de-greased with detergent and made semi matte perhaps with pumice or scouring powder to give a key to the patina.

    2. You will have noticed that the result looks best when wet and waxing in effect, gives your piece a wet look. So anything which does this will do.

    Don't forget that you can also colour copper simply by applying a torch selectively, as on my leaf below, but in that case applying wax will hide the colours. Dennis
    Attached Thumbnails Attached Thumbnails cl Copper Leaf Brooch 2.jpg  

  5. #5
    Join Date
    Jul 2009
    Posts
    322

    Default

    Thanks everybody! Dennis your leaf is gorgeous!


    I'd heard about protectaclear but haven't tried it yet - think I will. Also that jade oil which I'd never heard of.

    New options - love 'em!

    Thanks again!

  6. #6
    Join Date
    Jul 2009
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    Cornwall
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    Default

    Quote Originally Posted by Wallace View Post
    I use Protectaclear.. love it. Paint it on - lasts really well. http://everbritecoatings.co.uk/small...ting-151-p.asp
    Wallace, do you paint it on and buff it or just leave it as it is?

  7. #7
    Join Date
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    dear old Blighty - (in deepest Wiltshire)
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    Default

    Quote Originally Posted by caroleallen View Post
    Wallace, do you paint it on and buff it or just leave it as it is?
    Hi Carole, I do both. But will only buff it with a clean duster cloth, not a polishing buff.

  8. #8
    Join Date
    Jul 2009
    Posts
    322

    Default

    So I tried cold los today, and I don 't want to jinx anything but it's made such a difference in terms of the patina flaking off

  9. #9
    Join Date
    Jul 2009
    Posts
    322

    Default

    Anyone tried Rustoleum? It looks really good but I can't find any ingredients. Will it be safe against skin if it's dry though?

  10. #10
    Join Date
    May 2013
    Location
    Salisbury
    Posts
    93

    Default

    http://www.rustoleum.com/CBGResourceCenter.asp?sn=msd

    The MSDS will tell you pretty much anything you need about it

    best wishes

    Dave

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