How to Sharpen, Pruning Shears, Garden Shears, Bypass Loppers or Limb Loppers., by DIYwithWayne on YouTube. 9 min 30 s.
- Video length
- 9 min 30 s
- Time to do it
- 20 minutes
- Difficulty
- Easy
- Steps
- 9
What you need
Steps
Clean the blades with warm soapy water and a cloth. Remove sap, dirt and dried plant matter, then dry the metal fully before you start filing.
Look at how a bypass cutter works. One curved blade slices past a flat hook, so only the cutting blade has a bevel to sharpen.
Open the tool and find the nut or bolt holding the cutting blade. Undo it and lift the blade out so you can work on it safely.
Clamp the blade or hold it firmly on a bench. Match the file to the existing bevel angle so you keep the original edge shape.
Push the file along the bevel in one direction, away from the edge. Work the full length of the blade and count your strokes so both sides stay even.
Keep filing until you feel a fine burr along the back of the edge. That burr tells you the edge is thin and sharp again.
Turn the blade over and lay it flat on the file or stone. Give it a few light passes to remove the burr without changing the bevel.
Wipe off the metal dust, oil the pivot and bolt, then refit the blade. Tighten the nut so the blade moves freely but has no wobble.
Test the cut on a dry twig. A sharp bypass blade slices cleanly with little pressure and leaves no crushed fibres.
Tips and common mistakes
File only the bevelled cutting blade, not the flat hook, or you will lose the bypass gap.
Wear gloves when handling sharp blades and keep your fingers behind the file stroke.
A few drops of oil on the pivot after sharpening keeps the action smooth and stops rust.
Questions
Can I sharpen bypass loppers with a file only?
Yes. A flat file matched to the bevel angle is enough for a dull edge. A sharpening stone works well for the final light passes.
How often should I sharpen pruning shears?
Sharpen when cuts start crushing stems or need extra force. For regular garden use, a light touch-up each season is usually enough.
Do I need to take the blade off?
It is not always required, but removing the cutting blade makes it easier to hold a steady angle and file the full bevel evenly.
This guide was drafted from the video's details and general task knowledge. It has not been checked against the full video. Check the video and relevant product instructions before following a procedure. Report a correction.
