Based on the ancient lost-in-fire method

the natural plant metal artworks were prepared by using gypsum surface layer and reinforcement layer instead of traditional clay.The results show that the slurry prepared with 50% α-hemihydrate gypsum and 50% bauxite as matrix materials and 80% ferrous sulfate and 20% sodium pyrophosphate as additives presents loose microstructure

which can reduce the strength of the shell and improve the broken shell effect.The slurry prepared with 50% silica sol as binder has three-dimensional network structure

which can improve the bending and tensile strength of the gypsum reinforcement layer and prevent the cracking and deformation of the mold.Finally

the casting has the characteristics of realistic modeling and unique.