Hybrid Wax Based

Wax based Modeling Clay is a re-useable sulfur free, professional oil/wax based sculpting medium. Composed entirely of non-toxic, food grade components, it has an ultra smooth formulation that features a low melt temperature and a low tack feel that will not stick to tools or fingers. They have high plasticity and a unique elastic quality much like soft taffy when warm. At average room temperature, it is firm enough to capture even the finest details and can be re-used and re-melted indefinitely. Wax based clay bodies melt easily to a pourable consistency and is great for making copies of life casts where changes are needed. This sulfur free recipe is compatible with platinum silicone molding compounds. Buy it once and re-use it over and over again. 
It is available in soft, medium and hard grades.