DaniGü1 year ago000I have an old 455 sharpening machine and the drum with the blades is relatively blunt. Is it possible to have the drum sharpenedShow in original language (German)Anonymous1 year ago000 Helpful answerIn principle, this should work if you have the right sanding machine. I would ask Caran d'Ache if they know any sanding partners or if they have replacement drums. Good luckShow in original language (German)CommentDaniGü1 year ago000Thank youShow in original language (German)Comment