Tree pruner blades are large pruning shears with durable, serrated edges for cutting tree branches. Tree pruner blades can be used on any type of home or garden trees, but should not be used on tree branches larger than 4 inches in diameter. When tree pruning blades are heavily used, it is necessary to sharpen the blade when it becomes dull. Sharpening a tree pruner blade will require a time commitment, but it is a simple process that does not require specialized skills.
Submerge the sharpening stone in water. Ensure that it is fully soaked before using on your pruner blade.
Put on your gloves while handling your tree pruner. Although your pruner blade might appear dull, it is still very sharp and can easily cut skin. Be sure to use your gloves throughout the entire sharpening process.
Pour 10 to 12 drops of camellia oil onto your dry, soft cloth. If camellia oil is unavailable, you can use olive oil.
Rub the length of the pruner blade with the dry cloth containing the oil.
Begin polishing the blade with the sharpening stone. Use a single, sweeping motion across the length of the blade, as if you were striking a match.
Continue to polish the blade with the sharpening stone until you are satisfied with the sharpness of your blade. This process can take up to 20 minutes, depending on your particular blade use.
Finish by giving the blade a light rub down of camellia oil (or olive oil) with the cloth, and let sit overnight.
Rinse with a warm cloth and leave it to dry.