Author Topic: How are double overlay weights made?  (Read 2288 times)

0 Members and 1 Guest are viewing this topic.

Offline karelm

  • Members
  • **
  • Posts: 278
  • Gender: Male
How are double overlay weights made?
« on: February 21, 2007, 03:48:06 PM »
HI,
Has anybody got a link (or knows the process) how double overlays are done?
For example, is the overlay doen after the facets are cut?...but before they are polished etc.
Thanks,
KarelM
Karel
"Holy cows make the best steaks"


Offline Frank

  • Author
  • Members
  • ***
  • Posts: 9379
  • Gender: Male
    • Glass history
    • Gateway
Re: How are double overlay weights made?
« Reply #1 on: February 21, 2007, 03:50:14 PM »
The overlays are done before cutting.
Frank A.
Please help preserve glass web-sites for posterity by donating to The Glass Study Association a non-profit organisation.
Scotland's Glass - Ysart Glass
Glass Zoo - Glass Study.COM
Commercial Czech


Offline glasstrufflehunter

  • Members
  • **
  • Posts: 583
    • My Yahoo 360 page & Paperweight Blog
Re: How are double overlay weights made?
« Reply #2 on: February 21, 2007, 05:43:22 PM »
For overlays the color to be applied is made separately and looks like a cup and is melted onto the surface of the weight. In the case of a double overlay, a white layer is applied first then a translucent layer in whatever color the finished product is to be. Once the weight is cold, the facets are cut leaving windows for a peek inside.

I find encased overlays very fascinating. That's where after the above is done, the whole is then encased again, often what another overlay over that.
I collect Scottish and Italian paperweights and anything else that strikes my fancy.

My Paperweight Blog


Offline aa

  • Glass Professional
  • Members
  • ***
  • Posts: 1789
    • http://www.adamaaronson.com
Re: How are double overlay weights made?
« Reply #3 on: February 21, 2007, 10:53:26 PM »
I find encased overlays very fascinating. That's where after the above is done, the whole is then encased again, often what another overlay over that.

Do you have an image of one of these? Not quite sure what you mean.
Thanks :)
Hello & Welcome to the Board! Sometimes my replies are short & succinct, other times lengthy. Apologies in advance if they are not to your satisfaction; my main concern is to be accurate for posterity & to share my limited knowledge
For information on exhibitions & events and to see images of my new work join my Facebook group
https://www.facebook.com/adamaaronsonglass
Introduction to Glassblowing course:a great way to spend an afternoon http://www.zestgallery.com/glass.


Offline glasstrufflehunter

  • Members
  • **
  • Posts: 583
    • My Yahoo 360 page & Paperweight Blog
Re: How are double overlay weights made?
« Reply #4 on: February 21, 2007, 11:31:39 PM »
I don't have any pictures or examples in my personal collection but there is a picture of an encased double overlay on Peggy Burke's site. It's the third one down. http://www.paperweightsplus.com/phdi/p1.nsf/supppages/pwp?opendocument&part=5

I haven't found a picture of an encased overlay that has been overlayed again but I've seen them. I believe Perthshire made one.
I collect Scottish and Italian paperweights and anything else that strikes my fancy.

My Paperweight Blog


Offline aa

  • Glass Professional
  • Members
  • ***
  • Posts: 1789
    • http://www.adamaaronson.com
Re: How are double overlay weights made?
« Reply #5 on: February 21, 2007, 11:39:01 PM »
Great site. I'm familiar with double overlays but I'd like to see what you mean by an encased one, because it sounds as if you're saying that it is one that is cut and then reheated and overlaid. Or have I misunderstood?
Hello & Welcome to the Board! Sometimes my replies are short & succinct, other times lengthy. Apologies in advance if they are not to your satisfaction; my main concern is to be accurate for posterity & to share my limited knowledge
For information on exhibitions & events and to see images of my new work join my Facebook group
https://www.facebook.com/adamaaronsonglass
Introduction to Glassblowing course:a great way to spend an afternoon http://www.zestgallery.com/glass.


Offline KevinH

  • Global Moderator
  • Members
  • *
  • Posts: 4423
    • England
Re: How are double overlay weights made?
« Reply #6 on: February 22, 2007, 12:29:13 AM »
Adam, yes, that's right.

The double overlay weight, having been cut and finished is then re-heated and encased and then either faceted, or once more overlayed and cut.

Not too many folk attempt this but Perthshire Paperweights made a few one-offs and special editions which were described in "The Complete Guide ..." as, "Encased Double Overlay" or "Double Overlay Encased Double Overlay" or "Double Overlay Encased Triple Overlay".

Sorry but I, too, do not have any photos of these incredible pieces of work, but I had one in my hands a few years ago.
KevinH


Offline aa

  • Glass Professional
  • Members
  • ***
  • Posts: 1789
    • http://www.adamaaronson.com
Re: How are double overlay weights made?
« Reply #7 on: February 22, 2007, 08:08:58 AM »
This would be extremely difficult to achieve successfully. Probably why there are so few examples.
Hello & Welcome to the Board! Sometimes my replies are short & succinct, other times lengthy. Apologies in advance if they are not to your satisfaction; my main concern is to be accurate for posterity & to share my limited knowledge
For information on exhibitions & events and to see images of my new work join my Facebook group
https://www.facebook.com/adamaaronsonglass
Introduction to Glassblowing course:a great way to spend an afternoon http://www.zestgallery.com/glass.


Offline mjr

  • Members
  • **
  • Posts: 243
Re: How are double overlay weights made?
« Reply #8 on: February 22, 2007, 08:24:48 AM »
It is very difficult (in fact impossible) to find an image of a double encased double overlay on the web!!   

This is a nice example of an encased double overlay http://www.lhselmanltd.com/auc25/43.html

As an idea of what they might look like, here is a picture of a Perthsire which I think is a double encased double flash overlay - although I could be wrong...  http://www.lhselmanltd.com/auc27/48.html   For Karelm and aa , flash overlay differs in that instead of using a glass cup, the hot weight is rolled in couloured glass powder and reheated until a good layer is applied. This can then be removed by  cutting and facetting. The picture - one of the Perthshire hollow blown series, has been given a flash overlay, facetted then encased , then given another flasj overlay and faceted again. 

As Kevin indicates, Perthshire did a number of  d.e.d.a  weights. See http://www.pcatx.org/interest.htm  (Paperweight Collectors Association of Texas). Just over half way down is a reference to a talk given about Perthshires final year. This refers to a CD they have that shows 52 Perthshire double-encased double-overlay paperweights. Now if anyone has any contacts there to get a view.

And as aa suggests - it is all very difficult since every process is doubled, the weight has to be heated and cooled more than once so additional fracture/ennealing problems, and given wastage and the percentage of weights have faults, the amount of work that could be lost. 
Martin


Offline karelm

  • Members
  • **
  • Posts: 278
  • Gender: Male
Re: How are double overlay weights made?
« Reply #9 on: February 24, 2007, 06:12:19 PM »
Thanks all,
This explains a lot.  I have a weight that is less than well but from the above (and a brilliant article that I got via email) it seems that the maker would not know the quality of the weight until it is cut and therefore one can understand that a weight is allowed to go through with a couple of faults!!! :'(  Having had a look at encased weights (which I never knew about) those are amazing!!!)
On this subject but a different line, I have today been offered a double overlay drinking glass...anyone know anything about these (such as fair price etc) or should I post this to the glass section?
Thanks once again,
KarelM
Karel
"Holy cows make the best steaks"

 

Search
eBay.com
eBay.co.uk

Link to Glass Encyclopedia
Link to Glass Museum
Enter
key words
to search
Amazon.com