How to Make an Internal Pipe Wrench


Whether you have a broken pipe that needs to be replaced or need to install one in a flash, you can make an internal pipe wrench to perform the job. Internal pipe wrenches are inserted into pipes to install or remove them. Instead of removing an entire section of a wall, use an internal pipe wrench for hard-to-reach pipes. Internal pipe wrenches are rotated vertically for tight spaces and contain a nipple on the end of it for torque.

Things You'll Need

  • 2-inch-diameter steel rod
  • Vice-grip
  • Tape measure
  • Marker
  • Band saw
  • Carbide blade
  • Metal file
  • Power drill
  • 1/4-inch-diameter carbide drill bit
  • 1/4-inch-diameter steel rod, 4-inch length
  • Duct tape
  • Metal epoxy
  • 1/4-inch-diameter rod with a hexagon-shaped end, 2-inch length
  • 5-inch-diameter threaded nipple, hexagon hole
  • Make the wrench handle. Place a 2-inch-diameter steel rod into a vice-grip. Tighten the vice-grip to secure the rod in place. Measure and mark the steel rod to a 6-inch length using a tape measure and marker. Cut the steel rod using a band saw and carbide blade.

  • Smooth the cut end of the steel rod using a metal file. The cut end is extremely sharp and cuts skin on contact until filed smooth.

  • Secure the rod in a vice grip. Drill a 1/4-inch-diameter hole into the side of the steel rod, using a power drill and 1/4-inch carbide drill bit. Position the hole 1/2 inch above the end of the rod.

  • Insert a 1/4-inch-diameter steel rod with a 4-inch length into the rotation hole. The 1/4-inch-diameter steel rod is the rotation bit. Wrap the ends of the rotation bit with duct tape to secure it to the handle.

  • Make the nipple hole. Place the rod in a vice grip. Drill a 1/4-inch-diameter hole into the end of the handle using a power drill and 1/4-inch carbide drill bit. Position the nipple hole on the opposite end of the rotation hole.

  • Brush metal epoxy into the nipple hole. Insert a quarter-diameter rod with a hexagon-shaped end into the nipple hole. The hexagon-shaped end should face outward. Let the metal epoxy dry for 30 minutes.

  • Insert a hexagon-shaped rod into the hexagon hole of the 5-inch-diameter threaded nipple. Insert the nipple into the inside of a pipe. Turn the rotation bit to rotate the internal pipe wrench. Remove the internal pipe wrench when the pipe is loosened or tightened the desired amount.

Tips & Warnings

  • Adjust the length of the wrench handle and diameter of the nipple to the desired length and diameter.
  • Wear protective gloves, goggles and mask when handling a band saw, metal file and power drill.

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