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Rosalind Duffy Glass Artist

Art of Glass Oxford

What is stained glass?

Stained glass NOUN  - coloured glass to form decorative or pictorial designs, typically by setting contrasting pieces in a lead framework and like a mosaic and used for church windows.  

Yes - think of church windows and you have it!  I have not made a stained glass window for a church. I have made a couple of large stained glass panels for a restaurant in London and a panel for the Civil Hall in Didcot as well as smaller door panels and windows.

How is a stained glass panel made?

After many discussions about where the panel is going, size, measurements, colour choices, textures and finally an approved design.  From there a plan or cartoon is drawn up which I will work from.  The cartoon is like a jigsaw puzzle.  Glass choices are marked on the cartoon and the number of each piece.  I use 2 copies, one for building the design on, another for cutting the pieces out for opalescent glass.  I cut the glass to shape by hand.  Any staining will be done prior to assembling as the glass needs to be placed in a kiln which will take several hours. Lead came is cut by hand at the time of building the piece from left to right.  When all glass and lead are cut and placed on the cartoon correctly, I then secure and solder the joins on both sides. Lead cement is added to the panel (both sides) to prevent the glass for strength and weatherproofing.  It is cleaned, polished and left to lay for a week to dry.  

For copperfoiling instead of the pieces being put together with lead came, every piece of glass is cut, I then ensure the glass pieces fit exactly to the pattern, grinding if required.  When all the glass fits on to the pattern, the glass is cleaned and copperfoil adhesive tape is wrapped around it, burnished to make sure it is fitted securely.  When the copperfoiled pieces are assembled on the cartoon and secured in place, I then solder all the copperfoiled edges, the whole piece, not just the joins, on both sides.   The piece is then cleaned with warm water and soap.  The solder can remain silver or patina can be used to turn the solder lines black or copper.   


The 6' panel I made for the late Dave West's Abracadabra Restaurant in Mayfair.  

Lest We Forget

This panel was commissioned by the Mayor of Didcot, Bill Service, for the Didcot Civic Hall in 2019

How is fused glass made?

Glass fusing is the joining together of pieces of glass at high temperature, usually in a kiln.  

Coloured glass sheet that I use for my work are from the USA.  I use Bullseye glass as there are far more colours to choose from with Bullseye, although it is slightly more expensive than Oceanside glass.  

You can also use float or window glass which is clear transparent where you can add enamels, paint or other pieces of the same float sheet to create a masterpiece.  

Glass sheet comes in different thicknesses from 1mm, 2mm, 3mm, 4mm and 6mm.  

Bullseye glass also comes in powders and frit (small pieces of glass) fine, medium, coarse and extra coarse.  You can also get stringers, ribbons, vitrigraph and murrini.  Also billets and cullet for glass casting.   

Different temperatures you heat glass at depends on the outcome.  If you want your piece to stay more or less as it is cut, but stuck together then you would heat to 704C.  If I want my glass to look more rounded then I would heat to 740-760C.  A full fuse - anything from 785C to 825C the piece should be nice and flat.  All these temperatures depend on your own kiln and tests are required so you get to know each kiln you have.