Worbla BLACK : Incredibly easy to use with an activation temperature of 90°C, Worbla becomes soft and pliable, allowing you to shape, form and mold the product by hand safely. Scraps can be blended for zero waste. These leftovers can be molded to act just like putty, and many artists use Worbla's Finest Art instead of clay to create near-indestructible pieces. Non-Toxic and Skin-Safe, Worbla can be used in classrooms, apartments, workshops and beyond without needing uncomfortable safety gear or complicated venting systems. Use hot air such as a heat gun, water or steam to shape the plastic however you want. Black Art has a longer working time and a smoother finished surface, compared to Finest Art, and can take and create incredibly small detail. It has slightly less adhesive working time than Finest Art, so joining pieces requires both sides to be close to the 90°C for the best adhesion.