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The Magic Cafe Forum Index » » The workshop » » Experimenting with Outgassing (1 Likes) Printer Friendly Version

tom_stamm
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I was building a felt lined wooden box for a chop cup. I had glued the felt into the box using “TIGHTBOND II PRE,IUM WOOD GLUE”. After the glue had dried, I placed my brass chop cup into the box and the next day the cup was heavily tarnished and the side of the cup touching the felt was a lovely turquose tarnish. After cleaning up the cup and waiting a couple days for the box to air out, storing the cup still seemed to tarnish the cup far quicker than just leaving the cup out of the box. After a couple of days the cup had a nice brown/brass patina.

Yesterday I was working on a second felt lined box and right after gluing in the felt, I suspended a bullet wand with brass ferrels that I had previously antiqued with white vingar and roch salt. This morning the wand had an awesome turquose and dark brown patina. So there appears to be a way to accellerate putting a patina on brass by expossing it to the outgassing of the glue and if you add your item within the first 12 hours or so you can add a nice blue/green patina.

Just curious, does anyone know how long it takes for a wood glue too completely cure? Any other cool recipes for antiquing brass?
Just Some Guy.

"For Seven Tons of the King's Tea,
Six Fine Ladies to Fight a Great Jackass -- me."
gimpy2
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Another way to get a good patina on brass is ammonia. Just place the brass item in a sealed container with an open cup of ammonia. Seems like it takes overnight but might want to experiment with shorter times. Of course follow safety instructions on the bottle.
Cleverpaws
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Titebond II appears to have the highest level of formaldehyde according to an interesting article on the subject of off gassing using a Formaldehyde Release Attenuation Test (see link below).
The original Titebond has the least and Titebond 3 next. The test was done at 7 days so its not surprising that after a day you had a reaction occur after just one day.
https://impressionsofaholobiont.com/2018......ldehyde/
tom_stamm
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Cleverpaws:

Yikes! Looks like my projects will be curing out in the shed...

Thanks for the info.
Just Some Guy.

"For Seven Tons of the King's Tea,
Six Fine Ladies to Fight a Great Jackass -- me."
lin
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Interesting article— thanks for posting it.
Cleverpaws
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I'm glad others found it interesting too. I use Titebond3 pretty much exclusively. It has a lower working temp of 45 vs 55 for T2 and 50 for T1.
Also T2, in my experience has some glue adhesion issues with certain woods.
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