Glass Discussion & Research. NO IDENTIFICATION REQUESTS here please. > France

Cristalleries de Saint-Louis bowl 1908

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Ekimp:
Yes, it was purely the technique that I thought might be the same, not suggesting they’re related in any way :)

Think it’s called plate etching: http://www.glassmessages.com/index.php/topic,13714.msg88128.html#msg88128

cagney:
I think you are correct in your attribution of the acid etched "half moon " to St. Louis. I came to the same conclusion while researching a set of four acid etched cameo tumblers.
Of the handful of signed Baccarat acid etched cameo pieces I have seen all had the 'fern/leaf" like background. Val ST Lambert I believe used a stylized flower motif on their acid etched cameo as background.
The process I believe is double etching. Simply put a design is etched on a object of cased glass and then an added design is produced in a second dipping in the acid while the first design is covered. Creating two depths of etching. This technique was used by Frederick Carder at Steuben and is very discernible on some pieces as the casing can be quite thick and the etching quite deep compared to the French/Belgian acid etched cameo.

In the photo's if you look carefullyYou may be able to see that the raised portion of the"half moons" is the same depth as the non-patterned etched border design from the first dipping. The lower section of "half moons"being a deeper depth formed in the second dipping.Especially seen where raised lines directly intersect with the cased portion.

flying free:
Lovely photos and thanks for the explanation.  But how and what did they use to get that repeat background pattern?
I can't get my head around how they did it.

m

cagney:
A very detailed description of the process developed by Frederic Carder at Steuben. It is quite illuminating:

Carder established the etching room at Steuben about 1906. He had become familiar with the process of etching designs on glass early in his career at Stevens & Williams, where he used it as the first step in the productions of cameo glass. The acid-etched pieces produced at Steuben were made by transferring the design to the glass by means of a print made on paper in a "wax ink".

This print was taken from a plate etched with the reverse, or negative, of the pattern desired. The plate could be of glass or metal. Carder usually used a sheet of plate glass about one-quarter inch thick because it was cheaper than steel or copper. The pattern plate was warmed slightly, and the etched portion filled with "ink", which was a compound of asphaltum, beeswax, gum mastic, and turpentine. These elements were proportioned to form a paste that, when warm, was about the consistency of peanut butter; it spread easily into every detail of the etched pattern. After the excess ink was scraped off, a special transfer paper was placed on the warm ink and rubbed down just enough to make the ink adhere to the paper when the paper was peeled back from the plate. The paper with the design in ink was then applied to the glass object and rubbed down with a felt "rubber" to ensure a perfect union between the glass and the ink. Next, the paper was moistened with water and peeled away, leaving the ink pattern on the glass object to be etched.


The portions of the glass not covered with the pattern were painted with wax to protect them from the etching acid. Then the object was immersed in the etching acid for the time required to etch the designs to the desired depth. Afterward, the wax coating was removed, revealing the completed etched design. Etched patterns were discontinued about 1934.

A photo of some matching pieces to your salad bowl.

flying free:
Thank you :)

Wow.  So these minute etched patterns were created by rubbing paper with wax pattern on it onto the body of the vase so the minutely detailed wax pattern stuck to the vase?  And then it was dipped.  I'm agog at the amount of work that would have to go into that.

I've just noticed that a different version of this acid etched minute repeat pattern is on the body of a Clichy piece dated 1870s.  So it was being done it appears, much earlier than turn of century.

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