Greeting,
Hi there,i'm engineer and product design,i am hava 13 years experience product design and manufacture,i am have check your file attc,i Van help you for make 3d modelling and 2d drawing your plug,i needs few hour for finish,i can start work right now if you award me,i can send format file you needs as STL,STEP,IGES and etc file,i use solidwork for do it,will send best result,please chat me,hope we can work togheter,thanks Dedy.e