It sort of worked. The liquid latex captured the detail very well, and it's suprisingly durable.
But the goddamn alginate shrunk over the week that I was applying coats of latex. The final rubber mask was about 2/3 the size of the original. Which means it didn't work.
Jesus, i'm just trying to take an impression of the front side of a clay head. It's taking up alot of time and money. Shit.