The Carving Path: Intersting article - The Carving Path

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Intersting article

#1 Guest_Clive_*

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Posted 16 August 2009 - 09:25 PM

A note on medieval microfabrication: the visualization of a prayer nut by synchrotron-based computer X-ray tomography
P. Reischig, J. Blaas, C. Botha, A. Bravin, L. Porra, C. Nemoz, A. Wallert and J. Dik
Abstract: One of the most fascinating objects in the Rijksmuseum (Amsterdam, The Netherlands) is an early 16th century prayer nut. This spherical wooden object measures 4 cm in diameter and consists of two hemispheres connected with a small hinge so that it can be opened. The interior of the nut holds wood carvings with scenes from the life of Christ. These miniature reliefs show an incredible degree of finish with carving details well beyond the millimetre scale. In the present paper it is shown how synchrotron-based computer X-ray tomography revealed the structure and fabrication method of the bead. The central part of the relief was cut from a single piece of wood, rather than assembled from multiple components, underlining the extraordinary manual dexterity of its maker. In addition, a piece of fibrous material contained in the inner structure of the bead is revealed. This may have served as a carrier for an odorous compound, which would be in line with the religious function of the prayer nut.

#2 User is offline   Ko Baas 

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Posted 16 August 2009 - 10:00 PM

I think this is the one.

Attached Image: monthly_08_2009/post-142-1250460009.jpg


Ko Baas

#3 Guest_Clive_*

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Posted 17 August 2009 - 01:38 AM

Thats the one Ko.. great you got a pic, wonderful craftsmenship.. I've long been facinated by introducing some sort of scent element into some of my pieces.. I've done it a few times... the slighest wif of wet earth on a carving of a mushroon and a honey smell on a piece about bees and honeycomb.. I'd like to know more about how perfumes are created then I can really have some fun... and then my carvings will really stink.. lol

#4 User is offline   Phil White 

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Posted 17 August 2009 - 11:28 PM

Thanks, Clive,

Very interesting indeed!

There is a similar, perhaps slightly more ornate, piece in the Metropolitan Museum of Art in NY, here: Rosary bead

Phil
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Posted 18 August 2009 - 12:07 AM

Very little is know about these extraordinary carvers of Brabant.. even less their technique. Every now and then I get a snippet of info, a tiny piece of a puzzle but all that does is fuel my cursiosity even more.

#6 User is offline   fkvesic 

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Posted 18 August 2009 - 01:58 PM

"I'd like to know more about how perfumes are created"

Probably the best scents for wood are the essential oils, of which there are dozens, ranging from the tree scents - juniper, cedar, sandalwood, tea tree - through the herb scents - sage, thyme, rosemary - to the flower scents - rose, jasmine, lily of the valley, etc. Add in the citrus scents and grasses, too. Alcohol-based perfumes would probably dry out wood too much. Also, alcohol perfumes are difficult to work with; scents are transient unless you fix them with something disgusting-smelling like civet or deer musk.

How to mix them? You have to develop what parfumiers call a "nose" for the right blend of ingredients, with deep, medium and light notes. Deep, underlying notes, which linger longest, can be created with something like a mixture of lavender and cypress; medium notes could be of the bergamot, rose, vetiver variety; light notes, which are the first to vanish, might be the citrus ones, orange blossom, lily of the valley, etc. The more earthy tones are likely to reside in the deep notes. The skill is to blend them into a complex that's reasonable to most people, while remembering that everyone smells a perfume differently. It takes years to develop the art, but is worth having a bash.

Another trick with netsuke, I'd assume, is to perfume the box you sell it in; the wood would pick up the perfume. It's often the reason why sandalwood boxes were carved to hold small objets d'art. I'd be loathe to try out the oils on bone or ivory in case they discoloured the surface, or ate into it.

#7 User is offline   Doug Sanders 

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Posted 18 August 2009 - 06:11 PM

Clive, here's another from the Met, and one from the Cleveland Museum of Art (Ohio)

Attached image(s)

  • Attached Image: monthly_08_2009/post-10-1250619065.jpg
  • Attached Image: monthly_08_2009/post-10-1250619076.jpg


#8 Guest_Clive_*

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Posted 18 August 2009 - 08:36 PM

Many thanks Freda for the smellies info and Doug for the pics, I hadn't seen those examples before. Marvaloso.

#9 User is offline   Phil White 

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Posted 18 August 2009 - 11:13 PM

I could stare at these all day. Thanks, Doug!

Phil
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Posted 18 August 2009 - 11:20 PM

That precisely how I feel Phil.. they are mesmerizing.

#11 User is offline   Doug Sanders 

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Posted 19 August 2009 - 12:59 PM

Clive- Have you seen a copy of the study you cite? If not, I'm sure I could get hold of one and send it to you. I've seen one or two more of these rosaries in books...I'll double check and if they differ from those posted, I'll try and get some scans up.

I think I'd have fun for hours just opening and closing those objects.

#12 Guest_Clive_*

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Posted 19 August 2009 - 05:10 PM

Thanks Doug looking forward to studying that. I have taken the liberty of reproducing one of the pics here so everybody can see just how astonishing thes works are.

Sorry Janel if the picture is large.. but I think in this instance its worth it... scroll across to get the full pic

Attached image(s)

  • Attached Image: monthly_08_2009/post-2059-1250701780.jpg


#13 User is offline   Phil White 

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Posted 19 August 2009 - 11:20 PM

Fantastic,

This is an amazing image. You can see the details of fabrication, and the tool marks left by the small gouges and chisels on the figures and in the recessed areas. I expected to see more evidence of scraping. Fantastic!

Thanks, Clive!

Phil
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#14 User is offline   Janel 

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Posted 20 August 2009 - 12:04 AM

Thank you Clive,

I was secretly wishing that someone would provide a larger image :rolleyes:! (I happen to be at a WiFi with high speed connection, so today it is not such a problem.)

Has there been any revelation about the tools that were used by the carvers in those days?

Is there an outside part and an inside part created separately? Is there any evidence of the pieces being turned on a lathe to create the beginning shape?

Janel
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What you can do, or dream you can, begin it; Boldness has genius, power and magic in it. ~ Goethe ~


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#15 User is offline   Doug Sanders 

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Posted 20 August 2009 - 12:52 PM

Janel- I've got the full text of the article- it's 3 pages. I don't know if I can post it on the forum (copyright issues?), but I can email you a copy. Also, I found a book yesterday with three more prayer beads depicted. I'll try to get scans up shortly.
There is clear evidence that the hemispheres were turned first. The interior (figurative) portions are separate pieces, pegged to the outer shell. The top arch of the upper scene is also a separate piece.
Finally, some of the pikes and crosses will sculpted separately and inserted into drilled holes.

#16 Guest_Clive_*

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Posted 20 August 2009 - 01:16 PM

Yeah Phil and Janel.. its not me you should thank but Doug.. He did all the work.. I just posted it.. and Doug.. I'm sorry, I didn't think about copywrite issues, so keen I was to share the pics. Do you think that the pics OK to stay or should we remove it?

#17 User is offline   Janel 

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Posted 20 August 2009 - 01:17 PM

Hi Doug, thank you.

Yes, I would like to see the article, thanks for the offer. Your descriptions answer some questions that I had, too. I wonder if the arch at the top being separate has to do with the hinge or latch construction.

Janel
Teachers open doors, you enter by yourself. Chinese proverb
What you can do, or dream you can, begin it; Boldness has genius, power and magic in it. ~ Goethe ~


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#18 User is offline   Doug Sanders 

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Posted 20 August 2009 - 01:50 PM

What the heck- here's the text.Attached File  A_note_on_medieval_microfabrication.doc (169.5K)
Number of downloads: 159

From the Journal of Synchrotron Radiation, Vol 16, March 09 p.310-313

Enjoy!
Janel, as the authors surmise, the separate arch at the top of the scene may have been so carving tools and the tiny drill bit could gain access for undercutting.

#19 User is offline   Doug Sanders 

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Posted 20 August 2009 - 05:18 PM

Here are some scans as well as a Word document of the text accompanying them. It's all from the publication "Medieval Ivories and Works of Art / The Thompson Collection at the Art Gallery of Ontario", Cherry, J. and Lowden, J., 2008
The text was scanned and then run through a OCR system to convert it to a workable format, so there might be a few typos.

Looks like this collection is in your neck of the woods, Phil.

Attached File  carvingtext.doc (524K)
Number of downloads: 226
Attached Image: monthly_08_2009/post-10-1250788692.jpg
Attached Image: monthly_08_2009/post-10-1250788713.jpg

#20 User is offline   Doug Sanders 

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Posted 20 August 2009 - 05:22 PM

and the wooden ones:
Attached Image: monthly_08_2009/post-10-1250788837.jpg
Attached Image: monthly_08_2009/post-10-1250788843.jpg
Attached Image: monthly_08_2009/post-10-1250788881.jpg


I've got higher resolution scans of all of these if someone wants me to send a big file privately.

-Doug

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