Hi there?i am very interested with your project,i can help you for make 3d modelling and 2d drawing your part,i using solidwork for do it,i can send format file you needs as STEP,IGES,STL,X_T and etc..please share your sketch,picture or drawing,i experience in make 3d modelling and 2d drwing 13 years and i experience in machining process,toolpath,cnc milling,lasercutting and etc.i hope we can work togheter and i very happy if can help you,i wait your replay,thanks Dedy.e