I am asked more times than not if a dog clipper blade can be sharpened. Many times a clipper blade for dogs is used till it becomes dull, then is thrown out.
Dog clipper blades are made to be sharpened again and again as many as 7-10 times. Clippers blades can be sharpened at a fraction of the cost of a new one. Small animal and large animal blades consist of 2 blades, a comb and a cutter.
If you look closely at a comb blade (large blade) you will see that their are 2 raised railes. The cutter (small blade) sets on these railes.When you have your clipper blades sharpened these rails are where the material is removed to bring your blade back to being sharp.
If you have had your dog clipper blade sharpened by a general sharpener, and have been unhappy with the results, you need to get your clipper blade sharpened by a professorial clipper blade sharpener.