Clipper blades become dull when dirt, grit and dander get in between the cutting surfaces of the blade.
The first thing that can be done to ensure a long lasting sharp blade is to make sure that the hair or fur is clean. This can be challenging especially in animals with heavy undercoats. The undercoat will trap dirt and sand. It is important to get as much of that out as possible.
The second thing that can be done is to make sure you clean all the hair out of the clipper blade. Hair buildup will cause the comb and cutter blades to separate enough to make you think your clipper blade is dull.
The third thing that can be done is oil your blade. Most people do not oil nearly enough if at all. As a rule, for every fifteen minutes of clipping time you need to oil. These three things will dramatically increase how long your blade stays sharp.
For clipper blade sharpening click here.
