Having preferred stonewashed finishes on my knives for a while, and thinking about how good CRKs would look stonewashed, then seeing spydiesteves progress on a "homebrew" stonewash made me do mine a week or so ago too.
Here are a few (crappy) iPhone pics:
What I did was mask off the lockbar to prevent removal/damage to the heat treated lockface and detent ball by using heat shrink tubing to cover the entire lockbar, up to where it meets the rest of the lockside scale. Then, I wet sanded/polished the rest of that scale, and the entire presentation side scale up to 3000 grit automotive sandpaper (started at 400 grit). Once I had a completely smooth finish, removing all of the sandblasting in the areas not masked off (I HATE the look of sandblasted titanium), I just used some cleaned/rinsed large gravel, through that in a large Nalgene bottle with the scales and some WD40, and used spydies method of wrapping the bottle in towels (and filling the rest of the dryer with an old bed comforter), and kept tumbling, checking periodically until I had a light stonewashing on the scales that is very close to matching that on the blade. I did not stonewash or polish the clip, just to give a little contrast on the lock side of the knife. So, all the flats on my small Sebbie are now stonewashed, with contrasting sandblasted lockbar and clip. I love the way it looks now, and makes it seem like such a nicer knife than one with the stock sandblasting. As I said above, I can't stand sandblasted Ti. And, this tumbled finish will wear much better and mask small scratches, since you're just laying down many non-directional tiny scratches anyway.
