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  1. #1
    Join Date
    Jul 2010
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    Default staining dark timber to make it lighter?

    G'dat mates.

    I was replacing a slap of timber flooring over the weekend and turned out that I bought the wrong timber. I should have got NSW spotted gum but ended up getting QLD S/gum (I didn't know they were different)

    So now, as you can see in the pic, the color don't match, and I was thinking maybe I could use some sort of stain (maple?) to make it lighter so that the colour can match a bit more consistent?

    I have never stain before, so don't know if this would work at all. (lighter stain on darker timber).

    What do you think? Any other suggestions on how to match the colour?

    Appreciate your input,
    cheers,

    James


  2. #2
    Join Date
    Aug 2011
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    bilpin
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    Default

    When it comes to colour matching spotted gum, you really open a can of worms. there are several variants in spotted gum and also lemon scented gum gets sold as spotted. Bleaching may be your best option. Otherwise, enjoy the contrast.

  3. #3
    Join Date
    Nov 2005
    Location
    Darkest NSW
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    93

    Default

    Yup - it isn't staining you need, but bleaching. Oxalic acid might lighten it a touch, but maybe not enough?

    Tricky to get a good match.

  4. #4
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    Mar 2008
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    Lambton, Newcastle, NSW, Australia
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    Default

    Looks like Blackbutt or Tallowwood would have been closer, chances of bleaching it out now are pretty slim. I'd rip it up and do it again.
    Instagram: mark_aylward
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  5. #5
    Join Date
    Feb 2011
    Location
    Melbourne
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    206

    Default Staining darker timber

    What a shame but you would not be the only one to be caught out. Oxilic acid wont be enough to bleach it to match. Either keep it as feature or replace it as mentioned.
    Staining darker timber can be done but it ends up looking cloudy.
    Livos Australia

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  6. #6
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    Jul 2010
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    Sydney
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    Default

    thanks for the advice guys.
    for now I will just "enjoy the contrast", I personally don't really mind a bit of difference but I guess at one stage I will have to rip it out if I could find a plank that has a better matched colour.

    thanks again.

    James

  7. #7
    Join Date
    May 1999
    Location
    Grovedale (Geelong) Victoria
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    75
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    9,665

    Default

    Try a bit of shellac on some scrap. Weak coat.

  8. #8
    Join Date
    Sep 2011
    Location
    Adelaide
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    10

    Default

    To remove the natural colour of most timbers you can use a two part mix of sodium hydroxide and a strong hydrogen peroxide solution. You can apply the sodium hydroxide first and then immediately follow with hydrogen peroxide. You can also mix them together and apply, you should were gloves, goggles and a filtered mask. You can apply more than once and then nuetralise with 1 part vinegar and 2 parts water then rinse with water, sand lightly and apply stain to match the other boards, of course try on a sample first. I hope this is helpfull.

  9. #9
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    Jul 2010
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    Sydney
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    Default

    Quote Originally Posted by J.B.W View Post
    To remove the natural colour of most timbers you can use a two part mix of sodium hydroxide and a strong hydrogen peroxide solution. You can apply the sodium hydroxide first and then immediately follow with hydrogen peroxide. You can also mix them together and apply, you should were gloves, goggles and a filtered mask. You can apply more than once and then nuetralise with 1 part vinegar and 2 parts water then rinse with water, sand lightly and apply stain to match the other boards, of course try on a sample first. I hope this is helpfull.
    Thanks for the tip, I will definitely give a go on the off-cuts if I can find the chemical. Bunnings should have all these right?

    In the mean time, I varnished the timber last night, turned out it wasn't that bad. If the bleaching method works, I can always sand of the coat.


  10. #10
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    Aug 2011
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    bilpin
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    Default

    JBW's on the right track. That is the mix I would use. Use protection. "Check yourself before you wreck yourself."

  11. #11
    Join Date
    Sep 2011
    Location
    Adelaide
    Posts
    10

    Default

    Peroxide wood bleaches can be found in paint stores and some hardware stores, call around before you go.

  12. #12
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    Nov 2008
    Location
    Melbourne, Australia
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    Default

    Aside from the mandatory personal protection I'd raise one further note of caution about any form of bleaching. It often "softens" the top layer of a piece of timber. It's not so much a problem in many furniture applications but on a floor or step you'd want to try it on a test piece first.

  13. #13
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    Default

    Your dead right, some timbers are affected. Fortunately, spotted gum is ok.

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