Once I figure out what will go where in each layer it takes about an hour to pour. That one is four layers. You have to time it right so it starts to cure but not fully for each layer. If the first one cures before the last ones poured it'll run together from shrinking of the resin. It takes a little practice, I've had a few messed up ones come out of the mold. The prep is defiantly the most time consuming part.