 SCP-357 is a malleable substance, with a density of 250 kilograms per cubic meter. When permitted to physically interact with SCP-357, researchers describe it as having a consistency similar to that of Play-Doh brand modeling compound. At a temperature of 750 degrees Celsius inside the compression mechanism, SCP-357 expands with sufficient force to damage it. 40 meters cubed of SCP-357 is produced within 10 seconds, fully engulfing the furnace, $50,000 worth of equipment, and two researchers. After one hour, the volume of the sample decreases to the equivalent of the absorbed matter. Object class has changed from safe to euclid.