How to cut a stainless steel exhaust

Written by c.l. rease
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How to cut a stainless steel exhaust
Stainless steel exhaust (Motorcycle Exhaust image by Billy Tait from Fotolia.com)

Stainless steel exhaust systems resist corrosion. This allows a stainless steel exhaust to outlive a standard steel exhaust. Cutting the exhaust tubing is an integral part of installing the exhaust system on your vehicle. Combining specialised cutting blades designed to cut through thin metal with a variable speed saw will ease the cutting process by reducing work hardening. Work hardening occurs when heat builds up in the stainless steel, making it harder to cut.

Skill level:
Moderate

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Things you need

  • Bench vice
  • Tape measure
  • Permanent marker
  • 24 teeth-per-inch (TPI) saw blades
  • Reciprocating saw
  • Half-round file

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Instructions

  1. 1

    Use a tape measure to mark the cut length on the pipe with a permanent marker. Place one mark every 1/4 inch to make a dotted line around the circumference of the pipe.

  2. 2

    Secure the stainless steel exhaust pipe in a bench vice with the dotted line extending 3 inches past the vice jaws. Tighten the vice to hold the pipe tightly without distorting or denting the sides of the pipe.

  3. 3

    Install a 24 TPI blade in a reciprocating saw. Pull on the end of the blade to ensure it is secure. Plug the saw into an electrical socket.

  4. 4

    Set the toothed edge of the saw blade on the dotted line with the saw parallel to the floor. Pull the saw's trigger slightly to start the blade moving slowly. Keep the saw blade aligned with the dotted line as you cut. Stop cutting if the stainless steel starts to glow a dull orange.

  5. 5

    Slide one end of a half-round file into the cut end of the stainless steel exhaust. Push the file around the inside of the pipe to remove the burr left from the reciprocating saw. Slide the flat side of file around the outside of the cut to smooth the outer edge.

Tips and warnings

  • Wear proper personal protective equipment to avoid injuries while cutting stainless steel exhaust.

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