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  1. 23rd March 2014, 08:13 PM #1
    ajw
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    Default Tassie Blackwood goes greenish when I use titebond. Alternatives?

    I've found that tassie Blackwood tends to go greenish when I glue it with titebond. What glues do others use when making panels using Blackwood?

    cheers,

    ajw
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  3. 23rd March 2014, 08:17 PM #2
    BobR
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    Interesting! I have used both Titebond Original and Titebond III with Tas blackwood with no problem. Suspect that it may be something other than these two components that is causing the problem.
    Bob

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  4. 23rd March 2014, 08:43 PM #3
    shedbound
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    i have been having exactly the same problem with aquadhere pva+ i have been meaning to try a polyurethane glue
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  5. 23rd March 2014, 09:24 PM #4
    ajw
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    Quote Originally Posted by shedbound View Post
    i have been having exactly the same problem with aquadhere pva+ i have been meaning to try a polyurethane glue
    I think I'll try some polyurethane glue too. Even the slightest bleed of titebond onto the Tassie blackwood causes it to discolour. Attempts to wipe excess off with a damp rag make the situation worse.

    cheers,

    ajw
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  6. 23rd March 2014, 10:26 PM #5
    elanjacobs
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    I've also found PVA to react with Blackwood. PU is the way to go.
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  7. 23rd March 2014, 10:56 PM #6
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    Sir Stinkalot
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    Is the glue coming into contact with your steel clamps?
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  8. 23rd March 2014, 10:59 PM #7
    elanjacobs
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    Quote Originally Posted by Sir Stinkalot View Post
    Is the glue coming into contact with your steel clamps?
    In my experience, there's no metal of any kind needed to get the discolouration.
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  9. 23rd March 2014, 11:01 PM #8
    ajw
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    Quote Originally Posted by Sir Stinkalot View Post
    Is the glue coming into contact with your steel clamps?
    No, it isn't. I've seen black staining from that. This is quite different. I'll try and photograph it and post some pics.

    cheers,

    ajw
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  10. 25th March 2014, 01:04 PM #9
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    AlexS
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    This always happens with any type of PVA that I've used on blackwood. Don't know about PU, but no problem with epoxy.
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  11. 28th March 2014, 12:19 AM #10
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    I have also experienced the green tinge on blackwood from pva and have used PU on blackwood with success, interestingly, I also get the green tinge on raintree, maybe it's a brown couloured timber thing .
    It is usually only skin deep so a few shaves with the plane and it's gone.


    Pete
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  12. 9th April 2014, 07:30 PM #11
    O2zi3
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    Default pink tinge with epoxy

    I used a 2 part epoxy on a tassie blackwood table i made.......the glue was obtained from a window joining workshop i had access to at the time (not store bought and i dont know the name) but it stained it pink
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  13. 10th April 2014, 10:32 AM #12
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    Mulgabill
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    Quote Originally Posted by BobR View Post
    Interesting! I have used both Titebond Original and Titebond III with Tas blackwood with no problem. Suspect that it may be something other than these two components that is causing the problem.
    I have no problem With Titebond Original and II with Blackwood that I have. Since it's reported to also happen with Raintree whether it is a reaction with the tannins in those timbers?
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  14. 10th April 2014, 08:18 PM #13
    elanjacobs
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    I've also had it happen with American Walnut, not nearly as bad as Blackwood, but still noticeable.
    Maybe it reacts with whatever makes timber brown
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  15. 12th April 2014, 10:44 PM #14
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    I used hide glue. Worked ok.
    I am learning, slowley.
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