How to Cut Metal Trim

Written by c.l. rease
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How to Cut Metal Trim
Safety goggles are more effective at keeping metal debris out of your eyes than safety glasses and a face shield. (safety at work image by Paula Gent from

Aluminium, stainless steel and carbon steel are all metals commonly used to make metal trim. Each type of metal forms and cuts differently. Aluminium, although soft, quickly clogs cutting blades, and stainless steel generates excessive heat during the cutting process, which melts the teeth from standard tooth-cutting blades. In many circumstances, you can't tell which type of metal trim you are installing; therefore, it is best to use a cutting tool that can cut any type of metal trim.

Skill level:

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Things you need

  • Safety goggles
  • Leather work gloves
  • Tape measure
  • Permanent marker
  • Combination square
  • .040, six-inch diameter abrasive cutting wheel
  • Six-inch diameter angle grinder

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  1. 1

    Put on your safety goggles and leather work gloves.

  2. 2

    Pull the tape measure along the length of metal trim, and place a length mark on the trim with the permanent marker.

  3. 3

    Set the combination square to extend beyond the edge of the metal trim, align the blade of the combination square with the length mark you made in step 2 and drag the permanent marker along the blade to give you a reference line for your cut.

  4. 4

    Secure the .040, six-inch diameter abrasive cutting wheel to the six-inch diameter angle grinder.

  5. 5

    Pull the trigger to activate the six-inch grinder, lower the spinning abrasive wheel to the cut line you made on the metal trim in step 2 and move the wheel along the line until you cut through the metal trim.

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