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Glass Discussion & Research. No ID requests here please. => Murano & Italy Glass => Topic started by: Mister Loco on January 12, 2012, 10:25:54 AM

Title: New Member - First Silly Question!
Post by: Mister Loco on January 12, 2012, 10:25:54 AM
Hello.  We've always loved 60's Murano glass and we're starting to collect better items in a more planned way.  My question - is it safe to display glass on a sunny south-facing window ledge?  Can the sun fade or damage glass?  Thanks in advance for any advice.
Title: Re: New Member - First Silly Question!
Post by: dirk. on January 12, 2012, 10:41:51 AM
Hi and welcome Mr. Loco!  :hi:

Personally I´m always a bit cautious with displaying glass on a sunny window sill although it´s such a fascinating
thing to see your items in the different lighting situations.
For the following reasons:
- clear glass can change the colour over the time. Some glass becomes slightly yellowish or greenish and over a
  longer period purple-is; I´m not sure about the first two effects, but the latter is caused by the manganese
  content in the glass batch.
- some glasses can work as a lense - especially paperweights - and even cause burning. I think we´ve got a topic
  about an article in some newspaper some time ago.
- the heating when exposed to the sun can cause stress fractures, if the annealing wasn´t sufficient or there
  are still strains within the glass. Bubbly items are even more endangered because of the different extension
  levels of glass and air.
I therefore tend to keep my better pieces north and some of the minor and coloured ones south...  :)
Surely others will be adding quite a bit to your thread.

Kind regards,
Dirk
Title: Re: New Member - First Silly Question!
Post by: jakgene on January 12, 2012, 10:49:32 AM
And there is no such thing as a silly question ! at least the nice people on this board tell me that!

Can't add any more than Dirk has said - but welcome!

JAK
Title: Re: New Member - First Silly Question!
Post by: ahremck on January 12, 2012, 12:59:34 PM
Don't forget that the advice from Dirk applies only to the Northern Hemisphere Jakgene and myself would use the Southern window sill.

Ross
Title: Re: New Member - First Silly Question!
Post by: dirk. on January 12, 2012, 05:14:12 PM
And of course the lintel instead of the sill...  :ooh:
Title: Re: New Member - First Silly Question!
Post by: rosieposie on January 12, 2012, 07:44:47 PM
Hi Mr. Loco.

Welcome to the mad world of glass collecting and the GMB.

I am posting a picture of my South facing windowsill so you can see how the wood nearly caught fire by sunlight through the glass spheres I originally had displayed there!!

Eeeek!
Rosie.  :)
Title: Re: New Member - First Silly Question!
Post by: antiquerose123 on January 15, 2012, 12:48:54 AM
Hi there and Welcome!!   :rah:

No question is ever Silly in my mind, as we are all learning!! 

I never knew that about glass either in the window sill as posted here.....so any questions are Good questions, IMHO.  It is all a learning process!!

 :thup:
Title: Re: New Member - First Silly Question!
Post by: ahremck on January 15, 2012, 10:58:46 PM
Sounds to me, Mr Loco,  like you have a collection we would all like to see - at least some of the pieces you like.  This  link http://www.glassmessages.com/index.php/topic,42591.0.html takes you to a wonderful topic that many people have contributed to and I suspectryou could enrich by showing us parts of your collection.

In future it would be better to place general questions(like this one) in the "Glass" section of the site as a person with no real interest in Murano(Yes!  There are some out there.) who might have helpful suggestions would not see it.  The moderators will fairly rapidly move a topic to its appropriate area if it is very specific and is not creating enough interst in the general area.

Ross