![]() Viscosity is measured by submerging your viscosity cup into your finish then removing it to see the amount of time your finish takes to pass through the orifice at the bottom of the cup. The most common viscosity cup sizes are the #4 Ford or the #2 Zahn. You will require (a) your desired finish, (b) a Viscosity Cup and (c) a stopwatch. Typically, it is measured in centipoise which is one hundredth of a poise. Viscosity is the measurement of a fluid’s resistance to flow. To save you from dusting off your high school chemistry book, we have listed some information below about viscosity in relation to spray finishing: ![]() By recording these measurements, you can duplicate your material “recipe” for future projects to ensure consistency in production. When spray finishing, viscosity measurements will help you understand the size of needle and nozzle required to effectively atomize your finish. V is for Viscosity – Understanding Viscosity V is for Viscosity – Why understanding viscosity is important to spray finishing:
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