Factors that Affect Sewer Main Repair Costs. When the cause of the broken sewer line is tree roots, it is possible that the tree may need to be removed in order to excavate the sewer line and repair it. Tree removal can add thousands of dollars to the sewer main repair project.
Steps. 1  1. Choose your guard size. 2  2. Dry your hair. 3  3. Hold the clipper with the blades down and work against the direction of your hair's growth, so you can catch more hair with the guard.  4. Take care not to go too fast so you don't tug on the hair or hit your 1  scalp. 5. Remove the guard and turn the clipper over in your hand.
Guard Lengths. While guard lengths may vary slightly between clipper brands, a length 1 guard will cut your hair to about 3 millimeters, or 1/8 of an inch. With each whole comb number, the length of your haircut will increase by 3 to 4 millimeters, depending on your clipper brand. A length 10 guard will cut your hair to between 30 and 32 millimeters, or about 1 1/4 inches. A clipper with no guard will remove your hair at the skin.