Like asking how many licks to the center of a tootsie pop
Was the lacquer right out of the can or jelled? The biggest problem with lacquer drop fills isn't waiting for it to harden enough to cut and buff, it's out waiting the shrink back inherent in the product. Most chemical drying processes take on the order of 28-30 days to run their entire thing at the molecular level so I wait at least 1 month....