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An Online Extra to Fine Woodworking magazine
Viscosity Conversion Chart
For proper atomization, you must check the viscosity of your finish with a viscosity cup and then adjust your spray-gun settings accordingly
by Jeff Jewitt
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Open or download the 1-page PDF file below for a Viscosity Conversion Chart. (Requires the free Adobe Acrobat Reader to view and print PDF files.)

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If you have a viscosity cup other than a Ford No.4 cup, this Viscosity Conversion Chart will allow you to convert the viscosity chart in my article "Spraying Basics" to your particular viscosity cup.
"Spraying Basics" appears in the March/April 2004 issue of Fine Woodworking (#169).
Jeff Jewitt is a frequent contributor to Fine Woodworking on finishing topics.
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