Glass Identification - Post here for all ID requests > Resolved Paperweight Queries

paperweight help. ID = Paul Ysart

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SophieB:
Hi Kevin,

Ah! Well!! Got that one wrong!!   ::)
 I did wonder about an attribution to PY but was not convinced by the images...

Sophie

incazzatonero:
 In my opinion defenitly Paul Ysart.

boxed:
Hi guys
Thankyou for all comments
Quick question - Is it possible to have the paperweight fixed
Abd if so is it expensive?
Regards
B

KevinH:
Fixing a crack in a solid piece of glass is not really viable. It could even cause further problems.

The crack will probably have formed as a result of internal stresses (*) being released, perhaps by an impact or a sudden and extensive change in temperature.

Often, cracks in weights, especially in the base, will remain stable. Sometimes they will extend further. It depends on whether or not all of the stresses have been released.

(*) Stresses in glass are normally released during the gradual, controlled cooling process. But sometimes stresses remain - and are not noticeable until a crack occurs.

tropdevin:
***

Hi.  Paul Ysart paperweights from the 1930s, especially the rather tinted glass ones, seem prone to cracking. I don't think they were always annealed properly.   It is always important to check the base of seemingly sound Ysart paperweights from this era, as quite a few have cracks radiating from the pontil mark.  Repeated heating and cooling during the day/night cycle, or even getting water into the cracks can lead to these growing.  (I think water can affect the surface energy needed for Griffith crack growth, but it is a complicated subject).  I have heard of 3 people who have had Paul Ysart weights crack in two (or more) whilst the weights were just sitting in a display cabinet.

People have tried various ways to repair them...but I have yet to hear of anyone succeeding.  I think that once they are cracked, that is the end of it.  If they look good on display, great, but the market value is negligible.

Alan

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