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Article #345: Glass Fusing Made Easy

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Glass fusing is a hot and popular art. COE of the glass. If you do purchase
It is exciting and rewarding to design glass that has different COEs, keep them
pieces of glass and then melt and mold separate in your work area. It is
these pieces into individualized pieces important to match the COEs of your
of unique art. There are other terms for glass. If you fuse different COEs
glass fusing, such as glass art fusion, together, they will build up stress and
warm glass and kiln forming. will eventually break.
You will need a kiln to perform these Glass fusing is the heating and melting
procedures. A kiln is used to heat the of glass together. There are several
glass anywhere from 1100 degrees different stages when heating glass.
Fahrenheit to about 1700 degrees When glass is first heated it softens and
Fahrenheit. The temperature will be as more heat is applied, it starts to
determined by the process and desired melt and begins to flow.
look of the final piece. The first stage is called a "tack fuse".
Glass begins to become molten and starts This is when the pieces are heated to
to melt as it is heated in a kiln. approximately 1325 degrees Fahrenheit.
Melting and joining pieces of glass At this stage, they will have the
together to achieve a desired look, that appearance of just being glued together.
is what glass fusing is all about. The next stage is called a "full fuse".
Sometimes you only need one firing, but This is heating the pieces together to
other procedures can require several approximately 1450 degrees Fahrenheit.
firings. When finished, you will have a At this point, the pieces are completely
new piece that has been created, formed melted into one solid piece.
and shaped inside your kiln. Use a log and take notes as you proceed
Since glass is made and manufactured by through the process. Always write down
different companies, there is quite a the schedule used, type of glass, heating
range in the COE. What is COE? This is and holding times, and the placement of
the coefficient of expansion of the the glass pieces. When you keep track of
glass. Only purchase glass that has been your firing schedule, it will assist in
tested for the easiest way to know the future firings.






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