Author Topic: Ysart/Vasart or older?  (Read 882 times)

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Offline theglassnut

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Re: Ysart/Vasart or older?
« Reply #10 on: July 20, 2012, 04:35:56 PM »
Hi Folks,
 Amongst my large collection of paperweights i have 2 Vasart/Ysart Bros weights with ground bases, both weights have a crescent shape left behind after grinding, (sorry i can't add pics as i no longer have my own pc) embedded in the crescents is a red dust, i assumed this was polishing compound. is this a possibility?

http://www.tyflong.com/docs/tyrox90.pdf

Regards Stephen...


Offline Nick77

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Re: Ysart/Vasart or older?
« Reply #11 on: July 20, 2012, 05:35:41 PM »
Not sure with your weights but in mine the red ring is still 2-3mm embedded in the base clear glass, so I think the red glass being on the end of the pontil rod is the most likely.

Nick


Offline Sach

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Re: Ysart/Vasart or older?
« Reply #12 on: July 22, 2012, 02:58:43 AM »
Early in the century final polishing was done with rouge rather than cerium as it is now.  You red powder may well be from the polishing process.


Offline Lustrousstone

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Re: Ysart/Vasart or older?
« Reply #13 on: July 22, 2012, 08:50:19 AM »
But it wouldn't polish into the glass; you are removing a thin layer of glass with the cerium. The powder might stay in a "crack" but then you could remove it by poking or washing it out.


 

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