Quote Originally Posted by Utopian View Post
The best way to avoid corrosion is to never let your blade get wet.
I think Utopian meant to say "The best way to avoid corrosion is to never let your blade 'remain' wet."
Getting your blade wet is basically unavoidable, after all this is wet shaving...
Don't have a Koraat, but some razors will develop rust faster than others. And yes, it can occur within minutes.

At the end of a shave I rinse my razor under the hot tap as hot as I can get it, knock the spine on the edge of my sink to displace as much residual water as I can, wipe razor and scales with a tissue, 20 or so laps on the strop rough leather, 24 hours to air dry. Never had a problem with rust.