How to sharpen a hedge trimmer

Written by sommer leigh
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Unlike hedge shears, hedge trimmers are primarily electric and often have double-sided reciprocating blades. Since the blades on these types of trimmers are made of a higher quality, hardened steel, they should not require sharpening throughout their lifetime. If your hedge trimmer blades catch on a hard surface such as a stone, glass or wire fence, however, it may put a nick in the blade. In this circumstance, hedge trimmer manufacturers recommend sharpening the blade if the nick appears to affect how the blades function.

Skill level:

Things you need

  • Fine-toothed file or sharpening stone
  • Soft cloth
  • Mild liquid soap
  • Machine oil

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  1. 1

    Wipe off all dirt and debris from the hedge trimmer blades.

  2. 2

    Inspect the blades for damage, especially nicks.

  3. 3

    Remove the battery from the hedge trimmer before sharpening its blades.

  4. 4

    File any nicks with a fine-toothed file or sharpening stone. Move the file from side to side or back and forth along the nick until it's removed. Move the sharpening stone in a circular motion over the nick until it's removed.

  5. 5

    Clean the blades, after sharpening, with a soft cloth dampened in a solution of water and a few drops of a mild liquid soap.

  6. 6

    Apply a light film of machine oil after cleaning to prevent the blades from rusting.

Tips and warnings

  • Lubricate the blades before each use and after refuelling to maintain them properly.
  • Remove dirt and debris from the blades after each use.
  • Adjust the blades before using so they move freely. The trimmer's manufacturer should provides guidelines on the appropriate gap measurements necessary for proper operation.

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