All custom blades benefit from care and maintenance. While this also includes maintaining a sharp edge, there is one additional step you should take with your custom blade. All steels are reactive to their environment and this is particularly true with carbon steels. Steels are an organic material and will continue to patina throughout their life.
Patina definitely adds character to a blade, but there are of course limits to this and you want manage that by properly caring for your custom both during and after use. Our Knife Juice is a very old food safe recipe that reduces and manages patina development. Watch the discussion and application of Knife Juice in the video below for more information.