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| Forum topic by Garen | posted 1256 days ago | 524 views | 0 times favorited | 6 replies | ![]() |
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1256 days ago |
Hi, I have been glueing some oak boards up in my shop and after the glue has dried i see these black dots. Iam wondering what they are? They sand out no problem. My first thought is bad wood glue and also it did harden fully. let me know your thoughts Thanks |
6 replies so far
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#1 posted 1256 days ago |
Garen, pictures would help but one thought that came to mind is that oak will get black stains when it is exposed to iron and moisture (present in the glue). This is a reaction between the iron and the tannins in oak. Normally I have seen these when black iron bar clamps come in contact with the glue. This would leave a black stain in the surface of the wood that is in contact with the bar clamp. But this is not normally just a black dot. So I am puzzled as to whether this is what is going on in your case. -- Challenges are what make life interesting; overcoming them is what makes life meaningful- Joshua Marine |
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#2 posted 1256 days ago |
Never heard of anything like it, but is it possible that the black dots are mold/fungal growth? ian -- Late awakener.... |
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#3 posted 1256 days ago |
Scott has it very well covered. -- W James Brokenbourgh Custom furniture maker http://artisticwoodstudio.com/ |
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#4 posted 1256 days ago |
I’ve never heard of it either, but then again, I don’t use oak!!! -- Matt Garcia Wannabe Period Furniture Maker, Houston TX |
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#5 posted 1256 days ago |
I think it was the glue i switched to a different bottle and just glued up so well see. I did think about the mold thing but never have had a problem before. I use whatever species of wood the customer wants. Thanks for your inputs. |
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#6 posted 1256 days ago |
Yep…I think Scott has answered your question. -- Wayne - Plymouth MN |
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