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Author Topic:   Looking for a post-Please Help!
jersey

Posts: 1203
Registered: Feb 2005

iconnumber posted 01-08-2009 01:20 PM     Click Here to See the Profile for jersey     Edit/Delete Message   Reply w/Quote
Hello Fellow Members!

I am looking for a post that explains swirl type marks on the bottom of items.

Thanks as always in advance for your help.

Jersey

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bascall

Posts: 1629
Registered: Nov 99

iconnumber posted 01-08-2009 03:35 PM     Click Here to See the Profile for bascall     Edit/Delete Message   Reply w/Quote
Is it something to do with engine turning, or am I missing the point?

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adelapt

Posts: 418
Registered: May 2003

iconnumber posted 01-08-2009 04:07 PM     Click Here to See the Profile for adelapt     Edit/Delete Message   Reply w/Quote
From memory this came up in a discussion about engine turning, where the 1950s/60s fashion for the decoration of the bases of such flat things as trays and salvers was mentioned. A pattern of small concentric circes was made on these bases with a lathe or milling machine. Suggest a search under 'engine turning'.

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jersey

Posts: 1203
Registered: Feb 2005

iconnumber posted 01-08-2009 04:57 PM     Click Here to See the Profile for jersey     Edit/Delete Message   Reply w/Quote
Hello bascall & adelapt!

Thank you both, and you are both on the right tract. The post had lots of photo's showing these circles & also a reference to watches. It may have had to do with if it was a damage to the piece. These circles were made on the bottom by the makers mark, but it meant something.

Jersey

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middletom

Posts: 467
Registered: May 2004

iconnumber posted 01-10-2009 03:01 PM     Click Here to See the Profile for middletom     Edit/Delete Message   Reply w/Quote
That "engine turning" was often used in classic cars, especially dashboards, though Ettore Bugatti decorated his engines with it. I believe the correct term for it is Damascening, though I'm not sure if that spelling is correct, and derives from the city of Damascus in Syria, which was well known for its steel work. Originally it was applied with a hand tool with abrasive, but in the machine age it was most applied with an abrasive button mounted in a drill press. The pressure applied would be just enough to create the swirl.
middletom

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Richard Kurtzman
Moderator

Posts: 768
Registered: Aug 2000

iconnumber posted 01-10-2009 03:57 PM     Click Here to See the Profile for Richard Kurtzman     Edit/Delete Message   Reply w/Quote
jersey, Is this the post? Silver as a teaching tool

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jersey

Posts: 1203
Registered: Feb 2005

iconnumber posted 01-11-2009 07:03 PM     Click Here to See the Profile for jersey     Edit/Delete Message   Reply w/Quote
Hello Richard!

Thank you so much, that is the post I was looking for!

Thank you too Middletom for another interesting look at this kind of work.

Jersey

[This message has been edited by jersey (edited 01-12-2009).]

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