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.