Cutter capable of cutting away obstructions disposed on the insides of pipes ranging in diameter from approximately eight inches to approximately fifteen inches or from approximately twelve inches to approximately twenty-four inches

A method for removing obstructions including mineral deposits and concrete deposits from pipes, the method comprising:

• adjusting an adjustable skid assembly mechanically coupled to a cutter to movingly engage an inner surface of a pipe having either a diameter ranging from approximately eight inches to approximately fifteen inches or from approximately twelve inches to approximately twenty-four inches, the cutter comprising:
• a main body that serves as a drive housing;
• a turbine coupled to a shaft on a front end of the main body;
• a cutting assembly mechanically coupled to the turbine;
• a propulsion unit disposed at a back end of the main body opposite the turbine;
• a pipe assembly having a first end that is mechanically coupled to the propulsion unit and a second end that is mechanically coupled to a first end of an adjusting spindle;
• and
• a hose fitting mechanically coupled to a second end of the adjusting spindle;
• and
• with a hose connected to the adjusting spindle, suppling a washing liquid to the cutter, wherein the washing liquid enters the propulsion unit and the main body of the cutter is directed through liquid flow channels of the propulsion unit and of the main body, wherein at least some of the washing fluid directed through the liquid flow channels is directed by the propulsion unit in a rearward direction and in a forward direction onto the inner surface of the pipe, and wherein at least some of the washing liquid is directed onto a back side of the turbine causing the turbine to rotate, and wherein components of the skid holder couple with one another and with the adjusting spindle in a way that provides sealing and isolation chambers in the pipe assembly, wherein the sealing and isolation chambers prevent sludge from entering the adjusting spindle.