Any system in equilibrium will tend to keep its shape or deform predictably if viscosity is high. I exploit that in a rapid printing method I've developed. It prints directly into a stable volume using various methods such as focused energy or a moving planar array. The potential active printing speed is limited only by the data transfer speed into the volume. A secondary locking step is passive and allows the system to lock (cure or cool etc) in place without further input.<p>Relating my process to the linked technique, some of the parts could have been made of plastic powder placed precisely in the salt. The baking step could still be performed and the parts would be almost identical.<p>Imagine 10,000 tiny hourglasses in an array that can switch between depositing plastic or salt. They switch on the fly to leave plastic in the salt matrix. You can see how the speed could go up dramatically.