I thought sharing my pre-clipping routine maybe of interest. I always sharpen my shears before clipping. Sharp blades achieve a cleaner cut, which helps the topiary recover quicker.
I start by dipping the shears in a bucket of water with a splash of bleach. The water is frothy in the video but I don’t know why. There is nothing else added so it must be the brand of bleach I’m using. Works the same though to disinfect the blades and reduce the risk of spreading box blight. Also removes any dried sap that might be left on the blades after clipping.
I wipe the blades with a cloth, which I keep in my back pocket solely for this purpose. I then start using the sharpening stone that has been soaking for at least five minutes in water. You will notice bubbles appearing in the water as air is forced out of the stone.
Everyone has a different technique when using a sharpening stone. This is the way I find most comfortable. I hold the stone between my thumb and second finger, and at a 15 degree angle to the blade. You only want to sharpen the edge of the blade that has a slight incline, not the flat side. Wedging the handle of the shears against my leg to hold them steady, I run the side of the sharpening stone up and down the edge of the blade, putting a little more pressure on the downward motion than the upward. I work my way from the base of the blade to the tip and back two or three times.
Next flip the shears over and rub the flat side of the stone against the flat side of the blade to remove the burr that has built up from sharpening the other side. Remember, this is not to sharpen the flat side, just smooth it so the two blades pass cleanly together when clipping. Then flip the shears over and repeat the process on the other blade.
I like to use the Niwaki sharpening stones. Their shape is designed for secateurs but they work just as well with shears.
The stones come in the three different grits- rough, medium or fine. I use the dark brown (medium grit) stone the most but it is worth owning all three. The rough grit stone is useful for creating a new edge on blunt shears and the fine one is good at refining an already sharp edge. Take care not to drop the stones as they will shatter.
I go through my shear sharpening routine at least twice during a day’s clipping. Maintaining a sharp edge is a lot simpler than sharpening a new edge on blunt blades.