1. ??? ?????? Dart ????
???? ???? ?? dart dart ?????? ???? dart ???? ???. ?????? ?? ???? ????? ?????, ????? ????? ?????? ???? ??? ?????? ???? ?? ?????, ???? ?????. ??????, ?????? ??? ??????. ???? ??? ????? ??? ???? ??? ???? ?????, ???? ?? ???.
??? ?????? ??? ????
2. ???? ?????? ?????? ???
??? ??? ?? ???? ????????. ?? ???, ?? ???? ??? ?? ????? ?? ???? ?????? ???? ?? ???? ??? ???? ???? ????? ??? ????? ????? ???? ?????, ???? ????? ???? ???? ??? ?????, gapping ??? ?????, ? deburring ????. ??? ????? ???? ?? ????? ????? ???. ???? ??? ?? ????? ??? dart.
??? ???? ?????? ????