VEVOR Manual Wire Stripper Machine, 1.5-30 mm, Copper Cable Stripper Tool, Hand Crank or Drill Powered Modes, Heavy-Duty Q235 Frame Wire Stripping Machine, Easy to Use, for Scrap Copper Recycling

Yes, the blade can generally be sharpened, as long as it is not severely damaged. Maintain the original edge geometry and avoid overheating the blade during sharpening.