????????????? ?? ?? ???????????? ????? ???? ???????? ????? ???? ?????? ??????? ????? ??? ????? ????? ? ?????? ????? ?????? ???????? ????? ????? ???? +++ CAD Design for Mechanism with Plastic Arms +++ four days left ...challenge are comprehensive in an hooked up PDF and perhaps includes a compact movie (video contain only #1 tiny plastic aspect) -