A utility knife is a common cutting tool, and correct use is essential. Holding the handle, pulling out the blade, fixing the blade, adjusting the length, and locking the blade are the steps to open a utility knife. Safe use requires keeping the blade sharp, avoiding excessive force, cutting in the correct direction, and paying attention to environmental safety. After use, it must be properly stored to ensure safety.
Opening method
Hold the handle: First, hold the handle of the utility knife firmly with one hand to ensure that your fingers do not slip onto the blade.
Pull out the blade sheath: The blade of a utility knife usually has a protective sheath to protect the blade when not in use. Before opening the utility knife, you need to pull out this protective sheath.
Fix the blade: After pulling out the protective sheath, you will see that part of the blade is exposed. At this time, you need to gently press one end of the blade with your fingers to fix it in the handle.
Adjust the blade extension length: According to the thickness of the material to be cut, adjust the length of the blade extending from the handle. Generally speaking, when cutting thicker materials, the blade needs to extend more; when cutting thinner materials, the blade can extend less.
Locking the blade: Most utility knives have a locking mechanism that secures the blade in place while in use. After adjusting the blade extension, make sure the locking mechanism secures the blade.
Test the sharpness of the blade: Before using it, test the blade by gently cutting it on a piece of scrap paper.