Product review (5 stars): Dishwasher Rack Repair-White
For some reason, the top of the rack, in just the front right corner, started rusting.  It was fairly extensive, on the top of the rack, and looked kind of nasty.  I used my Dremel, and gently wire brushed the rust and loose coating off.  I applied three coats, waiting until it wasn't tacky any longer, and it looks GREAT!  It's been on over two months now, and still looks just like the day I applied it!  If you get really close...you can see the little ridges between the old and the new, if you know where to look.  My daughter, who owns the dishwasher, couldn't tell where I fixed it.  I highly recommend this.  FYI, the dishwasher is about six years old.