Where is a source of inexpensive tannin? All I have found so far is
pricey, reagent or lab grade stuff. I've seen what look like 1 pounds
plastics bags in a crafts video so I know it's available somewhere.
Are you talking about Tannin as in "Tea Tannins" or Tannic Acid (used
to tan animal hides)? They sound the same but aren't.
What use do you plan to make of it?
On Mon, 7 Jul 2008 06:18:48 -0700 (PDT), " email@example.com"
I'm planning to experiment with ebonizing wood with a low tannin
content. I'll brush on a tannin solution, let it set and then use an
iron salt like iron sulfate or iron acetate. It's essentially the same
effect as when my pipe clamps contact red oak after gluing. Usually
tannic is an ester of tannic acid, but either the acid or the ester
I think I could probably use a concentrated tea solution, but I'm
hoping for something more elegant.0
OK - sorry for the tone of my question 'cause it's apparent you know
what you're about.
Short of ordering out some tannic acid from a reagent supply house
($$$), my best thought is to boil then soak some oak sawdust/shavings
or even crushed white or water oak acorns in water for a week or two
(better 2). Decant or strain the liquid, and boil it down to 10% of
volume. That's what I've use to tan hides, old recipe from the Foxfire
books and it seems to work for that purpose. It'll be stronger than
It may be that if you DAGS on tanning supplies/tanning leather you'll
find a hobby/crafts outfit that can supply tannic acid of one of its
close relatives. I've never bothered to search.
If you can get enough tannin in the wood, you might want to try fuming
with ammonia as well. Of course that means searching out a source for
1 molar (or stronger) NH4OH. Depending on the underlying wood you may
get something that's close to ebonzing, maybe not. Most folks in this
NG suggest old fashoined Indai ink for ebonizing as it seems to give
the clearest black.
Let us I know how it turns out. As an ex-CHE I'm always interested in
new experimental results.
On Tue, 8 Jul 2008 13:14:40 -0700 (PDT), " firstname.lastname@example.org"
Thanks, but no thanks. I don't want scrapin's or juice from anybody's
bed - no matter what it would do to wood.
In the meantime, save your gym fees and soak in a tub of hot tea, swab
on some iron salts, dry off, and rub down with linseed oil. Your
friends will be impressed by your finish.
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