Hi sir?iam dedy.e from indonesia,i interested with your project,i can help you for make 3d modelling and 2d drawing ring and bracelet,i using solidwork for do it,i expert in make 3d modelling and 2d drawing,all file ready to prototype or manufacture,i can supplay file you needs,as file STEP,STL,IGES,X_t,and source file,i very happy can help you,i wait your replay,thanks Dedy.e