A Wax Knife is designed to cut and loosen wax build-ups formed on the inside diameter (I.D.) of the tubing walls. It is a spear-shaped tool with a series of cross holes drilled in a spiral pattern along the entire length of the body. The wax knife is installed on a tool string and lowered down the tubing string, exceeding the depth that wax characteristically forms in the well or area. After each pass, a provision should be made to flow or circulate loose wax from the well.
