Decadel Col-Lapse Study
Blown Glass, Time, Temperature
Photo Credit: Elizabeth Lamark
Knowing now that shape and design components are significant variables in the nature with which a cup becomes (un)done, I decided to commit to a comparison of cups within a shared family of design. 10 cups were blown, all composed at the top of a clear, straight-sided, flat bottomed tumbler shape and clear foot with folded lip. However, in the middle was a deliberate variety of stem systems to all undergo the same firing sequence in order to observe each stem design’s unique vulnerabilities.
The collapsing was conducted in a series of firings that held these cups within a kiln at 1150 F for 15 minutes. A photograph was taken of the test subjects after all had undergone a firing, put back into the kiln following the photo shoot, and fired again. Firings persisted until the cups were fully collapsed.