Glass Discussion & Research. NO IDENTIFICATION REQUESTS here please. > Belgium and the Netherlands Glass

Johnson-Matthey Crinkle type texturing of Cristaloc, de Rupel, Boom

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Ivo:
I think the article you link to is an excellent reference of overshot (aka suikerglas) with a clear photograph.  The JM fire-on techniques from the 1950s/60s used by many producers all over Europe (France, Italy, England, Belgium) may result in a bubbly surface, but the term "suikerglas"  only applies to the antique overshot described.

Overshot bears no relation to the crackle technique. The term "ice glass" is correctly used for crackle; the effect is achieved by dipping the hot glass in a bucket of ice water before re-fusing in the oven or re-covering it in another layer of glass. That is where it obtained its name.

http://glassgallery.yobunny.org.uk/displayimage.php?pos=-5904
and
http://glassgallery.yobunny.org.uk/displayimage.php?pos=-5903

Jay:
It's still really hard to see the Johnson Matthey 'Crinkles' effect in the advert image. Can someone supply/refer a 'known' example with a close up for comparison, please?
(I'd be quite content with the explanation that it's a 'resist' technique, since IMHO this is consistant with the patterning.)

It would also be really helpful to know which factories ' in France, Italy, England, Belgium' have already been identified as producers.

and... am I the only person who likes these things?

Lustrousstone:
This uranium glass bowl has the crinkles effect and I'm pretty sure its not English and this Chance Spiderweb definitely has Johnson Matthey crinkles and so does its pickle jar mate. They definitely are English

Jay:
Lovely Christine, thanks. That definitely looks like the same stuff!

David E:
Heck, I've only been offline for a few hours!  ;D But thanks to Christine, Anne and Ivo.

Worth noting, Jay, that the Matthey Crinkles effect was first announced in the late 1930s. However, I'm not 100% sure whether Chance did adopt this for Spiderweb in 1950, or adapted their own version.

Also note that the texture could vary quite widely in 'coarseness' - some manufacturers used a very fine 'frit' that almost looked like a satin finish.

If you need a higher resolution copy of the advert, please let me know and I'll mail it across.

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