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Fuming question

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Forum topic by JADobson posted 06-16-2018 02:20 AM 454 views 0 times favorited 6 replies Add to Favorites Watch
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JADobson

1443 posts in 2527 days


06-16-2018 02:20 AM

Topic tags/keywords: fuming oak

Finishing a small box made from 100 year old reclaimed qs white oak and would like to fume it with ammonia. I had trouble sourcing the 25%+ solutions so ended up getting the weaker (5-10%) solution from the grocery store. After 24 hours my sample piece was already super dark. The finishing book I was referencing stated I needed three days with the stronger solution but this seems to have worked fine. Does the age of the oak make a difference? Anyone know what’s up with that?

Also – will the fumes affect stainless steel. I was going to install my hinges. (Hidden hinge pins) but wasn’t sure what effect the ammonia would have. Should I wait till after to install them?

-- No craft is very far from the line beyond which is magic. -- Lord Dunsany — Instagram @grailwoodworks


6 replies so far

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Aj2

2321 posts in 2214 days


#1 posted 06-16-2018 04:51 AM

I too have noticed the same as you. The stuff from the grocery store works just fine.
I was going to fume my current build but I did like the way fuming took all the nice colors from my white oak so it’s going to be shellac naturally.

-- Aj

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splintergroup

2726 posts in 1639 days


#2 posted 06-16-2018 01:47 PM

I use the stuff from the hardware store (10%) exclusively. The weaker solutions just take longer, but I would avoid any that have scents or colors added.

The darkening is strictly based on the woods tannin content which varies greatly. I typically use 12-24 hours for a medium brown, but weaker tannin wood just never quite makes it.

I’d think the stainless will be fine, but I’d keep it out if possible ‘cause you never know 8^)

View Gene Howe's profile

Gene Howe

11621 posts in 3845 days


#3 posted 06-16-2018 02:32 PM

The stainless should be OK but, to be safe, you might want to apply a finish before installing the hardware. That’s the usual order, anyway.

-- Gene 'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton

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Andre

2664 posts in 2222 days


#4 posted 06-16-2018 03:38 PM

Wish I had seen this yesterday, that is a great color, just finished staining a coffee table dark brown ( I really dislike stains ) May have to experiment with some scraps for future projects?
I am of the thought that if you want that color, use wood that color! LOL!
I did apply my favorite OSMOS finish to the inside of the drawers, no stain!

-- Lifting one end of the plank.

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Runner

82 posts in 1190 days


#5 posted 06-16-2018 06:38 PM

I’ve had good luck with this from Amazon:
Ammonium Hydroxide

Beware it’s very toxic. You will need respirator with ammonia cartridge, goggles, gloves, etc.

-- Kjell - Eau Claire WI

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JADobson

1443 posts in 2527 days


#6 posted 06-16-2018 07:55 PM

Thanks for the replies everyone.

Runner, I think you misunderstood. I had excellent results with the grocery store variety. No need for the overly toxic stuff.

-- No craft is very far from the line beyond which is magic. -- Lord Dunsany — Instagram @grailwoodworks

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