I realize alot of ppl are request to fix their broken string than restring w/ new string. The reason is cost saving. However, I think the tension will be mess up by fixing only one string. So, I'm wondering how stringers can fix the broken string without mess up too much tension. In this case, maybe 4 knots are better than 2 knots, right? I want to hear your expert opinion. Thanks in advance.
When only one string is broken; in my opinion it cannot be mended back to it's original tension or shape; For people who wants to save money rather than care about tension loss or shape loss of their racket, anything is fine; Once one string is broken it is going to affect the tensions of all the crosses and mains regardless of whether you strung it 2 knots or 4 knots !!!
Then, I don't understand why Yonex have those badminton repair kit? Aren't they mean to fix the broken string?
If you are fixing broken strings or "patching", it'll have to be a 4-knot instead of 2-knot. A 2-knot would be impossible unless you replace all the string. You can patch strings but it's a PITA (Pain In The @rse). Most of the time you have to tie the knots in an off position unless you completely redo either the mains or cross. I never patch strings. If I charged people for stringing, I would say new string is $10 and patching is $20.
And if they still insist on the patching, I tell them it'll be a 1-week turnaround, no guarantees while the new string job will be done in less than 1 hour. It's obvious, I don't like patching.