The Viscosity Cup is a precision tool to accurately measure glaze viscosity, or thickness, for glazing.
Directions: Submerge the Viscosity Cup (#VC100) into the dipping tank and fill the cup fully with clear glaze. Lift the cup approximately 6” to 8” above the glaze line, then begin timing with a stopwatch. Stop the timer when the steady stream of glaze begins to break. This step gives you a measurement of the glaze consistency. Viscosity time may vary depending on the glaze used.
This Viscosity Cup has a larger volume and viscosity hole than other viscosity cups (i.e. #4 Ford Cup). The larger hole causes a faster stream of glaze. For this reason, the viscosity measured using #VC100 will be half the industry-recommended viscosity levels of your clear glaze.
For example, the recommended viscosity for Duncan Pure Brilliance Dipping Glaze (#PB26398, #PB26399) is 19-24 seconds. The correct viscosity measurement using #VC100 will be 10-12 seconds. The recommended viscosity of Colorobbia Super Clear Dipping Glaze (#HC0004D-1, #HC0004D-3) is 19-23 seconds. The correct viscosity measurement using #VC100 will be 10-11 seconds.
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