PoYo™ Putty is a two-component mold making silicones (tin catalyst) that can be mixed and applied “on site” – directly to almost any model. PoYo™ Putty will hold any vertical surface and capture even the finest detail and is perfect for making strong rubber molds that can be used within minutes. Use Less – Do More: Because PoYo™ is applied as a thin layer, less material is used, saving you money. PoYo™ Putty molds are also lightweight, making them easier to handle.