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Old 9th October 2009, 01:02 PM   #1
Matchlock
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Quote:
Originally Posted by G. McCormack
My understanding is that washing may be the best option, and that the tannin treatment really doesnt do anything.

Sorry to differ but in my 30 years of restoring experience, tannin has definitely proved to have a both cementing and tightening effect. Moreover it generates a very smooth and homogenous black surface. Nor more problems with material losses of excavated iron objects!
You may ask any good museum restorer.

Michael
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Old 9th October 2009, 03:01 PM   #2
G. McCormack
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Quote:
Originally Posted by Matchlock
Sorry to differ but in my 30 years of restoring experience, tannin has definitely proved to have a both cementing and tightening effect. Moreover it generates a very smooth and homogenous black surface. Nor more problems with material losses of excavated iron objects!
You may ask any good museum restorer.

Michael

Michael- I'm no expert, and I'm not trying to contradict you or your experience- just passing along info I gathered from Dr. David Scott, Chair of the UCLA/Getty Conservation Center, professor at UCLA, and author of the two most important metals conservation books to be published yet.


Regarding the knife, does it appear the bone handle has been turned to shape?
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Old 9th October 2009, 04:47 PM   #3
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Thank you everyone,

I will leave it up to my friend, but I do not see any reason why he should not try the tannin solution.

I am not certain what "turned to shape" means.

Regards,
Teodor
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Old 10th October 2009, 03:13 PM   #4
G. McCormack
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I was just wondering if the bone handle was turned on a lathe
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Old 10th October 2009, 07:40 PM   #5
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Quote:
Originally Posted by G. McCormack
I was just wondering if the bone handle was turned on a lathe
Still no idea.
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Old 10th October 2009, 11:45 PM   #6
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lathe for turning objects


a piece of wood or bone held between two points and rotated, a cutting tool (chisel) is then pressed against it to produce a rounded object of circular cross section like a chair leg, or a knife grip. the illustration is the earliest known inscription found in ptolomeic egypt. the rotation is by a cord wrapped around one end and the free ends are pulled to spin the object alternately clockwise and counter-clockwise. similar lathes are still in use in parts of asia. see 'pole lathe' in google. this is 'turning'.

another one, foot operated


(i'm a degreed mechanical engineer, so my mind is geared to know these things )
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