Don't have a clue on sharpening, however dittings are capable of grinding tons of coffee before burrs need to be refurb. I am going on what a friend told me, never used one my self, chances are your burrs will be good. In his description on the listing I noticed he did say it was in good working order. I bet you will have nothing to worry about except deep cleaning to get the stinky flavored coffee beans residue out of it. I bought a Grindmaster about a year ago used off ebay, other then cleaning works perfectly, I only run about 30 lbs threw it a month. Some of my customers are just to lazy to grind there own or to cheap to buy a good grinder so I had to purchase one, I do charge .50 a pound to do this for them. I am not in the retail coffee buisness I just roast for family and friends about 125 LBS a month. Rich
