The machine is equipped with a tension adjustment knob on the side, which can be flexibly adjusted according to hair quality and needs: 1. For fine and soft hair, it is recommended to adjust the tension to 1-2 gears to avoid hair breakage caused by excessive tension; 2. For thick and hard hair or when making thick dreadlocks, the tension can be adjusted to 3-4 gears to ensure the dreadlocks are formed tightly; 3. For beginners, it is recommended to test the tension on synthetic hair first, and then operate on real hair after finding the appropriate gear. After adjustment, you can first clamp a small amount of hair to test, and then perform batch operation after confirming the effect.