Close to a diamond's hardness on the Mohs scale, ceramic blades are much harder than traditional steel blades and will not rust. Professional dog groomers often use ceramic clippers for heavy-duty grooming because the blades hold a sharp edge and stay cooler for longer periods of time. Ceramic clipper blades come in two types: regular and snap-on. Regular blades have no attachments, while snap-on blades consist of a metal comb and ceramic cutter that snaps onto clippers. All clipper blades need regular sharpening, but ceramic blades need it less frequently.
Disassemble your clippers by unscrewing the screws and removing both blades. If you have a snap-on ceramic blade, separate the comb from the cutter and set it aside. Make sure the coarser side of your diamond sharpening stone is facing up.
Grip the diamond sharpening stone with your nondominant hand and pick up the moving blade with your dominant hand. Press the sharp side onto the stone's surface at a continuous 45-degree angle. Drag the blade toward you over the surface with smooth, consistent strokes.
Unscrew the screws holding the guide blade to the guide. Grip the guide blade with your dominant hand and draw it across the sharpening stone, with the sharp end pointing away from you. Do this for approximately three to five minutes.
Flip the sharpening stone over to the finer side. Repeat the sharpening process with both the moving and guide blades until the sharpened edges shine. Afterward, wash and dry the blades with a soft cloth.
Reassemble your clippers. For snap-on blades, oil the cutter and comb before reassembling. Turn the clippers on and let them run for a few minutes before using to smooth over any nicks or imperfections.
Try a silicon carbide sharpening stone or an aluminium-oxide wheel if you are wary of scratches or nicks in the blade. If a ceramic blade is damaged and not simply dull, you may need to replace it. Contact the clipper manufacturer for detailed recommendations on sharpening blades.
Do not use oil on your diamond sharpening stone. Be very careful handling blades. Use necessary safety equipment to avoid cuts and other injuries.