Author Topic: Acid mark - ID = Theresienthal  (Read 1971 times)

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Offline redheat4

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Acid mark - ID = Theresienthal
« on: May 07, 2008, 07:39:23 PM »
Hi I am sure someone knows this mark on a little tumbler/vase.


Offline redheat4

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Re: Acid mark ID
« Reply #1 on: May 07, 2008, 07:42:57 PM »
Sorry I always forget to turn them right way up before posting


Offline Theresienthaler

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Re: Acid mark ID
« Reply #2 on: May 08, 2008, 11:28:13 AM »
Hi,

this mark (not an acid but a sandblast-mark) ist the mark of the Glassworks of Theresienthal in the shape used before 2004.
This mark was in use since around 1970/1980 and is now with a little difference (with a little "H" in it`s middle) (still) in use.

Regards

Stephan
http://www.roemer-aus-theresienthal.de
Kind regards

Stephan


Offline redheat4

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Re: Acid mark ID
« Reply #3 on: May 08, 2008, 02:53:51 PM »
Thanks Stephan.


Offline krsilber

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Re: Acid mark - ID = Theresienthal
« Reply #4 on: May 08, 2008, 07:36:48 PM »
They sandblast it?  Why would they do that?  Wouldn't that require covering the whole outside in resist?  I don't know much about the process - can they aim a fine stream at a certain area?  I suppose so.  Huh!  Never heard of a sandblasted mark.
Kristi


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Offline Lustrousstone

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Re: Acid mark - ID = Theresienthal
« Reply #5 on: May 08, 2008, 07:43:43 PM »
Sandblasting can be very fine and directional and it's cheaper and probably safer than acid


Offline Frank

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Re: Acid mark - ID = Theresienthal
« Reply #6 on: May 08, 2008, 11:50:12 PM »
Sandblasting is the most widely used method of marking since the 1970's. Health and safety as well as cost come into play. It is usually done with a stencil. It is easy to recognise with a glass as there are small pits as opposed to acid etched which is smoother.

Here is some glassware engraved in 1985 by sandblasting LINK all of Burns Crystal etched designs are sand blasted.
Sandblasting on glass was a US invention, see transfer printing forum - Sand-blasting 1870. (USA - Benjamin Chew Tilghman)

It is slowly being replaced by inkjet printing which is extremely fast and allows extremely fine detail as well as full colour and chemical bonding to the glass by UV exposure. A lot cheaper too.
Frank A.
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Offline krsilber

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Re: Acid mark - ID = Theresienthal
« Reply #7 on: May 09, 2008, 02:31:49 AM »
Thanks Frank and Christine.  Makes sense for health reasons.  I didn't know it could be so directional, so you wouldn't have to cover the whole piece, but that makes sense, too.

I notice Burns calls it "engraving."  That annoys me.
Kristi


"The most beautiful thing we can experience is the mysterious. It is the source of all true art and all science."

- Albert Einstein


 

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