KMT is correct
Give up on the cup. Measure by weight and you can mix very small quantities. I have an old Ohaus triple beam scale left over from my free flight model airplane days that I use for paint mixing. I use a shot glass that my father the dentist gave me. A cheap gram scale can be purchased from a big box office supply store; Office Max, Office Depot, Staples, etc. Measure by weight and you can mix any quantity. It took me a few years to give up on the PPG cups and go by weight instead. Way less waisted paint. That stuff is expensive!!!! "Use the force Luke"
Brian V. - RV4 finishing