[Bonetools] Door hinge?

[Alice Choyke]

Wouldn't the wear be symmetrical?

Alice

On Thu, Apr 25, 2019, 12:46 איתן איילון <etana at eretzmuseum.org.il> wrote:

> Perhaps if there was kind of a wider ring to improve the attachment
>
> השג את Outlook עבור Android <https://aka.ms/ghei36>
>
> ------------------------------
> *From:* Bonetools <bonetools-bounces at listserv.niif.hu> on behalf of Alice
> Choyke <choyke at gmail.com>
> *Sent:* Thursday, April 25, 2019 7:13:56 PM
> *To:* Mailing list for archaeologists of the research group for the study
> of object and waste of bone, antler. ivory and horn.
> *Subject:* Re: [Bonetools] Door hinge?
>
> Dear Etan and Paul,
>       I like the idea of the top of a bowdrill. However, I donot
> understand the concentic wear radiating from one side of the hole. How
> would that work mechanically? What am I missing?
>
> Alice
>
> On Thu, Apr 25, 2019, 11:09 איתן איילון <etana at eretzmuseum.org.il> wrote:
>
>> Why not the upper horizontal handle of a bow-drill?
>> Etan Ayalon
>>
>> השג את Outlook עבור Android <https://aka.ms/ghei36>
>>
>> ------------------------------
>> *From:* Bonetools <bonetools-bounces at listserv.niif.hu> on behalf of Paul
>> Stokes <escoffier1951 at yahoo.co.uk>
>> *Sent:* Thursday, April 25, 2019 5:28:14 PM
>> *To:* Mailing list for archaeologists of the research group for the
>> study of object and waste of bone, antler. ivory and horn.
>> *Subject:* Re: [Bonetools] Door hinge?
>>
>> Hi Josje,
>>
>> They could be the handle/bearing block of a bow drill.
>>
>> Regards,
>>
>> Paul Stokes
>>
>> On Thursday, 25 April 2019, 13:44:00 BST, Josje van Leeuwen <
>> josje89 at gmail.com> wrote:
>>
>>
>> Dear all,
>>
>> This was found in a medieval monastery in Frisia (see attached). It's a
>> bovine metacarpus with a big hole in the centre. Around the hole are
>> concentric friction marks. They cover the proximal side of the bone next to
>> the hole completely. The distal side next to the hole is only partly
>> covered in friction marks. The backside was flattened by cutting, but has
>> no friction marks. Another hole was made in the distal end.
>> A second one was found in the same dig (but different context), also with
>> a hole in the middle but no friction (see pictures).
>>
>> Could this be the lower (and perhaps corresponding upper) part of a door
>> hinge? The door could have made the friction marks...
>> Does anyone know any parallels? Or a different interpretation?
>>
>> Many thanks in advance and greetings from the Netherlands,
>>
>> Josje van Leeuwen
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