 What is the cure time of art resin? The cure time of art resin is about 24 hours. This refers to the period of time it takes for the product to go from a liquid through its chemical reaction to a hard solid. So at about 24 hours it will be hard to the touch and you can hang it on the wall. It's at about a 95% solidity state at that point and over the next two days. So at the 72-hour mark that's when art resin is fully cured. 72 hours.