Starting a stringing business. Some of the better players I will be stringing for know what strings they want, other don’t. In general, at what point should I recommend a co-poly or poly string to someone instead of synthetic gut. Also, what are some synthetic gut strings you guys use and like and think are universally pretty popular. Thanks in advance.
Whenever somebody asks me about trying a poly, I'm like some of our pals here in terms of being cautious about it. I've seen that string cause significant troubles for players of all levels and it seems to me that none of us can know whether or not we can handle that string until after we find out that we can't handle it.
Some folks do great with polys (that includes the co-polys in my book) and I don't think that they should be outlawed, but it's not rare to see players of the 2.5-3.0 level with very compact strokes, etc. who have full beds of poly in their frames. I think that those are cases where the less resilient poly strings are really working against a developing player.
It's tough to know exactly when is a good time for one player or another to make the switch to a poly and I string for a local circle of kids and adults. No two cases are the same among them. But I agree with our pal
SirFuzzington above in terms of the upside of a lighter gauge of poly.
I keep reels of Isospeed Baseline on hand - inexpensive and comes from TW in four different gauges. I use their lightest gauge - 1.20mm (17L ga.) - about as much as the other three combined. This "skinny poly" as a main combined with a 16 ga. syn. gut cross had been trouble free for both the kids and the handful of adults who have tried it when they made the switch from softer string. At moderate tension, I find this layout to play about as firm as a snug bed of full syn. gut. Much less harsh or clunky than a heavier gauge poly in the neighborhood of 1.28-1.30mm.
Unless I come across a fantastic deal on some premium string, I don't stock it in hopes that somebody will eventually want it. Too many labels, gauges, and colors to please everybody without making a really big investment. If somebody who uses you for your services likes a certain string or combo, it can be easy to encourage them to buy their own sets or reels and just pay you for installation.
There have been a few threads like this recently where one of our pals was (is) seeking advice on what to stock for a new stringing business. You may find some helpful ideas from those if you skim through a couple pages in this section or even the Stringing Techniques/Stringing Machines section.
I'm rather a syn. gut nerd and use it in my own frames all the time. The feel of 17 ga. is rather nice, but I'll often use a 16 ga. alternative in the warmer months because it's usually better behaved - the heat can turn 17 ga. syn. gut soft in a hurry. Gosen OG Sheep Micro has been great as a cross in my poly hybrids and it's also okay in full beds, but it does play on the firmer side of the street. My favorite syn. gut is from Tecnifibre - I had to find another source after TW stopped carrying it. It's softer than the Gosen.
Prince Syn. Gut (SG) with Duraflex is popular, but it's a bit too clunky for me. Even if Prince's original SG is mildly less durable, I prefer it's middle-of-the-road stiffness compared with the Duraflex option. Forten Sweet is probably softer than anything else in the family and I find that it can also work as an affordable alternative to a more pricey multifiber. The 17 ga. version of Forten Sweet is a bit fragile - I'd only consider that string for a racquet with a more dense pattern like an 18x20.