An old sword gets some love.
This old, forgotten katana (literally forgotten- a friend discovered it in his basement after some flooding. He had bought it years ago and forgot he owned it). These pictures show just how bad the rust had gotten, including significant pitting on the blade. One side was worse than the other.
Here is that same sword after 3 and a half hours of work. This took so long as I needed to polish off the rust to assess the pitting in the blade; then grinding out to match the hollow grind of the blade profile, smoothing to an even finish and final polishing to a near mirror finish. Luckily, this sword had metal to spare and the structure was not weakened with all the grinding. The customer's first words were "It feels a pound lighter!" (I won't name the organization, but the manufacture is notorious for stout but heavy blades). It was a lot of work, but rehabbing this old blade was satisfying.