Blade 1 is the active shear: with blade, for shearing Blade 2 is the passive shear: without blade, for fixing
The main difference between the pruning shears in the picture is the different springs used. 1 is a ring spring, 2 is a V-shaped spring, 3 is a concentric spring, and 4 has no spring at all, which is a retro literary style. [Follow Ai Mu Bonsai, play bonsai with Ai Mu] 1 and 2 are the most common of the three springs. As long as the springs used are of good quality, their service life is similar. Relatively speaking, the ring spring is the most convenient to replace, the V-shaped spring is the lightest, and the concentric spring has a strong rebound force.
There are many brands of pruning shears, and there are definitely differences in quality. The quality is mainly considered from three aspects: sharpness, durability, and price. How to judge its quality without using it can be distinguished by touching, looking, and trying.
First look, look at the edge. The edge is polished flat, smooth, and without gaps. The cutting line of the large blade surface of blade 1 in the picture is clear and the texture is neat.
Second touch, check the workmanship. Check whether the screws are tight. When the handle is open, gently bend it to see if there is a gap between blade 1 and blade 2. This is very important. Once there is a gap between the blades of the pruning shears, the branches will be clamped, and it will be difficult to prune the branches. In addition, feel whether the handle is comfortable and the weight is appropriate.
The third test is to measure the sharpness. The simplest way is to cut a piece of thin paper, because paper cutting does not clamp the mouth and pruning does not clamp the branches.