Guitar neck fingerboard corrector, or Heating tool electric guitar neck deformation, bending correction straightening tool. Product Name: Guitar Neck Fingerboard corrector. Product application: It is used to correct the bending and deformation of the fingerboard of the guitar neck. It is suitable for all kinds of guitars, including basses, and can be used for overall neck correction or local correction. Product usage: Before calibration, you can adjust the neck steel bar to the middle position where no force is applied. According to the position of the neck deformation and distortion, the entire neck can be corrected. Local deformation correction is also possible, and the specific adjustment should be made according to the actual situation. Tighten the loosening screws of the corrector. Depending on the degree of deformation, it can be corrected in stages and multiple times to avoid excessive deformation in one correction, which may cause the neck fingerboard to crack. According to the degree of neck deformation and the temperature and humidity of the surrounding environment, you can adjust the temperature by yourself. Generally, a temperature range of around 60°C to 120 °C is acceptable. The correction time can be controlled by yourself according to the temperature you set or the degree of neck deformation. Generally, it takes tens of minutes or several hours.