An "It has always worked for me before" schedule implies a single approach to slumping regardless of differing conditions. Layup alterations, thickness variations, colour contrasts, mould variations all affect the scheduling. The schedule for each piece needs to be altered when there are changes from the schedule for the “standard” piece, or mould.
Photo credit: Emma Lee |
In the example
shown, we are not told the schedule, but it shows that the rate was a little too fast. If it had been faster
the glass would have separated further apart. The heat was enough to appear to recombine
at the edges where it was not slumping so much.
Review your
"go to" schedules whenever something changes. It may still be a good base from which to work.
But you need to assess the layup, thickness, and any other variations to help
adjust the schedule to fire each piece.
Some of the variations from the “standard” to be considered are:
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