T

I am no expert when it comes to this and have only play around with it. However, on the Marlin forum, I recently read a thread by another person who was learning how to case color. Once you get to the point at which you are at, two things seem to help to develop brilliant colors: 1) aerated distilled water and 2) shielding around the pieces to create turbulence around the parts once they are being quenched.

Here is the thread: http://www.marlin-collectors.com/forum/viewtopic.php?f=21&t=3732

David