One . Look at the steel for the scissors. Good scissors first condition that is, of course, steel is better, now high-grade scissors usually used 440C steel, hardness of 58-60, especially the domestic scissors, this steel has represented the best steel. The use of this steel scissors are basically welding knives, in the knife body and the connection between the knife and the shadow of a welding, knife body and hilt is used in two different steel, the hilt of the steel is worse. Of course some imported scissors steel, hardness can be more than 70. But how to judge the good difference of steel: carefully observe the gloss of the knife body, can be compared with the pair of scissors (ordinary stainless steel material) put together to compare that the best, will find a good steel knife body gloss suffused with soft green light (as the swordsman said the sword out of the sheath suffused with green light), ordinary stainless steel will emit a slightly dazzling white luster. Some people will say that the gloss of the scissors is polished, which is true, but no matter how polished, the different material of the light emitted by the steel color itself can not be changed, just a little brighter.
Two． Look at the workmanship. The high and low grades of scissors depend largely on the fine workmanship. Observe the work one is to see the inner edge of the edge line (that is, the edge of the inside a white light, for the scissors two blade contact track line) is even smooth, may open scissors, then gently close, feel the shear mouth is smooth, the second is to see whether the guide rail is smooth, now most of the Scissors guide is "U" shape, Japanese scissors in favor of "V" shape, But the end must be sleek; three is to see whether the handle conforms to ergonomic principle design, scissors grip in the hands feel comfortable, finger in the circle will not have discomfort, refers to the edge of the circle is smooth and rounded, the silencer position is correct, the end is solid, the tip is close.
Three． Try the handle. Of course, if the scissors meet the above standard, the handle will not have a big problem, but the scissors are produced by hand, and can not guarantee the quality of every perfect, and regardless of whether it has a problem, always have to use when the hand feel comfortable is good, because each person's finger shape and thickness of the difference, The same scissors each person's hand will have a slight difference, we hope to be able to ensure that their use when feel good on the line. But when trying to feel the need to pay attention to, be sure to gently open and close, because the speed of the resulting air shear, the damage to the blade, most vendors are not allowed to do so.
Four． Try the sharp. Here are two simple methods: one is to take a single layer of tissue paper, water spray, with scissors to cut open a cut, if the shear smooth is sharp, scissors coarse is not unpleasant, the second is to take a piece of fine cotton (towel on the cotton line), with scissors tip to cut, can be cut to indicate sharp tip. But no matter which method to try, before the test must obtain the consent of the seller to do, otherwise it will make unpleasant things happen.