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Forum topic by tyskkvinna posted 12-30-2012 12:52 AM 964 views 0 times favorited 3 replies Add to Favorites Watch
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tyskkvinna

1308 posts in 1643 days


12-30-2012 12:52 AM

I recently worked on Tamboti for the first time and I am having some minor issues with it… it’s turning green on me. One piece is entirely the darker part of the wood so the green is very subtle, but the other piece has mostly the lighter portion of it and it’s a very, very obvious green. It looks kind of like I put it in a bath of green water and am watching the wood suck it through… except that I didn’t.. :)

Just curious if there’s anything I can do in the future for this and/of if anybody else has encountered it.

-- Lis - Michigan - http://www.missmooseart.com - https://www.etsy.com/people/lisbokt


3 replies so far

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rrj

9 posts in 1349 days


#1 posted 12-31-2012 01:23 PM

I have seem this wood turn color with a slight greenish tone but mostly reddish when newly cut and exposed to oxygen, not sure about the green color you are describing. Different spices of wood develop patina faster then others, you could try sealing the wood after working it with a sealing oil like walnut and linseed or a lite wash coat of shellac(1/2 lb cut).

FYI: This wood is very toxic, it can exude a white, poisonous substance when freshly cut. When burned it can give off noxious fumes. The poisonous stuff is applied to arrow-tips by indigenous tribes. Wash you hands after working with this stuff and don’t rub your eyes.

-- Buying high priced quality tools you only CRY ONCE, when you write the check, not every time you use it!

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tyskkvinna

1308 posts in 1643 days


#2 posted 12-31-2012 01:51 PM

Immediately after I carved it I coated it in shellac… and the colour change did not occur until a few days later.

The toxic part of the wood is actually why I got it… I like working with materials most people have never encountered, the unusual aspect of it tends to sell well.

-- Lis - Michigan - http://www.missmooseart.com - https://www.etsy.com/people/lisbokt

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rrj

9 posts in 1349 days


#3 posted 01-01-2013 05:29 PM

What kind of shellac, dewaxed or wax? What color shellac? If you made your own what did you use for solvent and what was he source? Did you have any additives or retarders in the shellac? What was the solvent (methanol or ethanol) and the source? I suspect that your shellac may be the cause of your problem. You could try a different sealer and see what happens.

-- Buying high priced quality tools you only CRY ONCE, when you write the check, not every time you use it!

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