I usually like to try to keep the existing hardware on an old piece. Sometimes the customer wants a completely NEW and totally modernized look and we just change it out...but many times, a little extra time spent on refinishing the old ones can really change the entire look...Not to mention save a lot of money!
I don't think there are many different ways on redoing the hardware, but I do know there is definitely a RIGHT way. And that "right" way does involved a few very necessary steps.
Skip a step and you might get this... "NO", that is NOT a picture taken from my own kitchen because I totally half-xxxxx it, thinking I would be changing everything out in a few months anyway and only sprayed on the silver color with not prep-work or seal coat. Nope, not me!
See the resemblance!