Flex Formula enables artist to make flex clay out of their favorite metal clay. Add 1 drop per gram of clay. Less or more can be added as you see fit. After adding and kneading with clay allow to sit for 20-30 minutes. Once added clay will remain flexible even after drying on hot plate. Results are best when clay is between 1 to 2.5mm thick. Flex Formula works great in conjunction our RingMaster System for making flexible ring bands. Contains glycerin and piece should be thoroughly dried on hotplate before firing in well ventilated area.