The job called for a base coat of Loma plaster and a top coat of Porcelina plaster, both of which come in 50-pound sacks.
We added 70-grit sand to Kilz 2 Latex stain-blocking primer and applied a coat to the entire substrate so it would grip the plaster.
At the end of the day, we used a paddle and two 5-gallon buckets to mix the base coat for the walls and the ceiling.
We applied the uncolored base coat to the ceiling and the colored base coat to the walls — both to about the thickness of a credit card — using 240-millimeter flexible stainless-steel rectangular trowels.
I buy these Japanese tools from American Clay for $36 apiece, and they're awesome; they have the perfect shape and flexibility for applying both the base and top coats.