Another possible explanation could be that antique glass panes were always hand rolled and had highly uneven thicknesses within the same sheets. Nowadays, most glass is “float” glass and has a uniform thickness.
From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On Behalf Of sun.di...@libero.it Sent: Friday, August 05, 2011 10:07 AM To: sundial@uni-koeln.de Subject: R: RE: mock stained glass sundial ... glass is always a little bit liquid. Very old windows are slightly wider at the bottom than the top because the glass continues to flow over the years... Karon, this is an old urban legend. Glass does not flow at all ! Look f..i. at http://www.glassnotes.com/WindowPanes.html Ciao. Gian ----Messaggio originale---- Da: ka...@karonadams.com Data: 05/08/2011 1.51 A: "John Carmichael"<jlcarmich...@comcast.net>, <sundial@uni-koeln.de> Ogg: RE: mock stained glass sundial OK, I don’t know that much about the way the double paned windows are made. It was just what I was thinking. Most of my experience in window glass is just from being a Real Estate agent. Being able to tell the difference between original glass in old homes and replacement<G> You would know this but most people don’t. glass is always a little bit liquid. Very old windows are slightly wider at the bottom than the top because the glass continues to flow over the years. Of course, that is not from experience working with glass, so you may debunk me, here, but it is something I read about in books about Vintage Homes back when I sold houses. BTW, I wanted to ask you. for a beginner in stained glass. Would you recommend copper tape or leading? Karon Adams Accredited Jewelry Professional (GIA) You can send a free Rosary to a soldier! www.facebook.com/MilitaryRosary www.YellowRibbonRosaries.com
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