Art Glass 2 Glass
Works
Wasser™ - Technical
Information
Download or
view:
Discover the beautiful
possibilities with the NEW Wasser Glass Instructional
Guide. This four page reference contains updated firing
schedules, fusing tips, applications with other fusible
glass, and serves as the perfect resource for Wasser
Glass fusing knowledge.
Wasser™ Glass
is unlike any other glass you've experienced. It is
hand-cast; therefore some variations in color and pattern
may occur. These variations add only to the visual
aesthetics of the glass. A full size sheet is 12' square
& since it is hand cast it may not be a perfect
square.
General
Specifications: Measured 90 Coefficient of Expansion
(COE) = 89.7 x 10-1/C°
Glass Thickness: 1.6mm
(0.063"); Range: 1.5 mm - 1.8 mm (0.059" -
0.07")
Glass Weight: Nominal: 0.4
gm/cm2 (14 oz/ft2)
Sheet Size: Standard glass
sheet measures one square foot.
Firing
Temperatures:
(~±5°F and are dependent upon
glass color and thickness)
Softening Point :1240°F
(677°C)
Tack Fuse :1285°F (696°C)
Orton std. lg. cone 18 (r/r 108°F)
Full Fuse :1340°F (727°C)
Orton std. lg. cone 17 (r/r 108°F)
Annealing Temperature : 940°F
(482°C)
Shrinkage Initiation Point
:1360°F (738°C)
Balling Formation Starts :
1450°F (788°C)
Glass Lost / Shelf Intrusion
: 1550°F (843°C)
Note:
Recommended minimum soak time
at full fuse temperature: 30 minutes
Recommended minimum soak time
at annealing temperature: 30 minutes
After annealing: suggested
cooling rate is 10°/min to 800°(472°),
15°/min to 700°(371°C) and
< 20°/min. to room temperature.
Wasser™ original
formula You may use the above tables with the Old
Formula. It should be noted that there are some differences
between the old & the new formula. The darker colors
fuse faster then lighter colors. Please use the annealing
ramp below for the old formula.
Note:
Annealing ramp is from 1150°F
down to 650°F at a rate of decent of no faster than 3°per
minute (slower is better). With a soak at 940°F (482°C)**
Remember you can't over anneal glass!
The above note on soak times
for the New Formula should be followed for the Old
Formula.
After annealing: suggested
cooling rate decent <20°/min. to room
temperature.
**If using Bullseye™ or other
90C.O.E. glass anneal & fuse with the other glass in
mind: ie. 960°F for Bullseye™. Note: I have taken this
glass to 1450°F for a full flat fuse with Bullseye™ with no
problems. The surface will ball up then flatten. Please
note that small shapes may distort at higher temperatures.
So you may want to fuse face down on thin fire paper only
(to retain glossy surface).
It is compatible with all 90
C.O.E. glass. Just remember that it fuses faster than
Bullseye™ and others. With this glass you can fuse &
slump at the same time!
Heating and annealing Schedules for
Bullseye™ Glass
For use with choosing the
correct cones for firing glass in pottery kilns.
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