Can someone tell me what is minimum lenght of string needed to string a recket (2 pieces 4 knot)? I bought a yonex 500m reel of string and i try to calculate how can I string as many recket as possible. My calculation tell me that for main 440cm and for cross 415cm should be enough to string a recket. Is that rihgt? If thats enough i could string 58 recket with 500m reel. I use eagnas crank st-200 machine.