Rolling of M56x4 Stud bolt on a PR 60e PRS – a 60 tons Thread Rolling machine with programm storage and numerical feed control.
how to make a simple venturi….under $2.00…OH AND CUT THE PEN (TUBE) DOWN ONCE YOU ADJUST TO ITS BEST PERFOMANCE SO THERES ONLY 1/2″ OR SO STICKING OUT. see the companion demo video at ….