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#1 | |
(deceased)
Join Date: Sep 2008
Location: Bavaria, Germany - the center of 15th and 16th century gunmaking
Posts: 4,310
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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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#2 | |
Member
Join Date: Jul 2005
Location: Tallahassee, FL
Posts: 131
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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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#3 |
Member
Join Date: Dec 2004
Location: Bay Area
Posts: 1,660
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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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#4 |
Member
Join Date: Jul 2005
Location: Tallahassee, FL
Posts: 131
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I was just wondering if the bone handle was turned on a lathe
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#5 | |
Member
Join Date: Dec 2004
Location: Bay Area
Posts: 1,660
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#6 |
Member
Join Date: Mar 2006
Location: Room 101, Glos. UK
Posts: 4,215
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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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