How to make crown glass (curved glass) windows

[Montaigne]

This popped up in my Facebook feed today and I thought I should share it. A quite clever method of creating crown glass for windows.

 

https://www.facebook.com/permalink.php?story_fbid=191131440334607&id=100083132567073

 

Including a screenshot for continuity.

[wefalck]

Good method, except that it is not actually 'crown glass' or 'Butzenscheiben' as in the original German post. What he creates are the domed window-glasses that were fashionable during some time in history - not sure of the exact period, but I have seen them in houses, particularly in Northern Europe.

 

Crown glass is the left-over from making flat glass by spinning a (large) blob of glass hanging from the blowers pipe: https://en.wikipedia.org/wiki/Crown_glass_(window)

 

Image from the above Wikipedia article.

 

You'll find such windows all over central and northern Europe in Medieval buildings.

 

Edited April 5, 2023 by wefalck
typo

[Montaigne]

4 hours ago, wefalck said:

Good method, except that it is not actually 'crown glass' or 'Butzenscheiben' as in the original German post. What he creates are the domed window-glasses that were fashionable during some time in history - not sure of the exact period, but I have seen them in houses, particularly in Norther Europe.

 

Good observation, wefalck, thanks. I was wondering about the same when I was reading up on Crown glass the other day, after seeing lots of windows like the one above in the series The Borgias.