[Bonetools] bone details with screw thread

[Heidi Luik]

Oh, sorry, of course I forgot to add the attachment.
Heidi

At 15:32 29.03.2011, you wrote:
>Dear Katherine,
>
>Thank you very much. Yes, it is possible, they have quite similar 
>shape. But I am just wondering why should these bobbins have screw 
>thread? I add two pictures from van Vilstern's book (sorry for the 
>bad quality), no 122 there is a bobbin, and it does not have screw 
>thread. No 120 is a pincushion holder, which has a detail with screw 
>thread. But what it is interesting: when they started to cut these 
>screw threads into bone (and probably also wooden) artefacts? As I 
>understand it is not possible with simple turning lathe but needs 
>some special lathe (thread milling cutter?). (I am sorry, maybe I do 
>not use right expressions for these things in English)
>
>Heidi
>
>
>At 14:55 29.03.2011, you wrote:
>>Dear Heidi: These are almost certainly bobbins for making lace on a
>>pillow, and similar pieces are still in use all over the world (though
>>many of them are heirlooms).  Dating them or their use based on
>>manufacture would be problematic.
>>
>>Good luck with this though,
>>
>>Kate Moore
>>
>>
>>
>>Quoting Heidi Luik <heidi.luik at mail.ee>:
>>
>>>Dear all,
>>>
>>>My colleague from Tartu asked me about some small bone details with
>>>screw thread. These probably come from the 18th-20th century
>>>context. I have some similar pieces from Tallinn also. In Tallinn
>>>they are from mixed layer, but 18th-19th century looks most likely
>>>here too. My colleague would like to know if such objects could have
>>>earlier date also, and when screw thread cutter was introduced. I
>>>hope maybe some of you has more experience with such things or maybe
>>>you can suggest some publications about the topic.
>>>(I have found some similar objects in the book: Vilsteren, V. T. van
>>>1987. Het Benen Tijdperk. Gebruiksvoorwerpen van been, gewei, hoorn
>>>en ivoor 10.000 jaar geleden tot heden. Drents Museum, Assen.)
>>>In the attachment are some photos of such objects.
>>>
>>>Thank you in advance,
>>>Heidi
>>
>>
>>
>>Zooarchaeology Laboratory
>>University of Pennsylvania Museum of Archaeology and Anthropology
>>3260 South Street
>>Philadelphia, PA 19104 USA
>>
>>
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>
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