Niwaki offer a sharpening service for all Niwaki kitchen knives. We use Shapton whetstones for the best finish possible, and finish off with a coat of camellia oil. Chips and nicks can be ironed out, but inevitably it changes the line of the blade. It only works for carbon blades, so don't try sneaking any cheapo stainless steel knives in - you're on your own with them.
The deal: you send to us - we strongly recommend a tracked service such as Recorded Delivery - we do the work, then send them back with Interlink. Depending on how busy we are, it can all happen on the same day, or can take up to a week. If we feel the blades are beyond saving, we let you know. If you SUSPECT they're beyond saving, get in touch before you send them, and we can talk about it.
What to do: Add to Order, print out the confirmation sheet and send in with your knives (one order is good for 2 knives.) If you are ordering other stuff as well, we send it all together.