Originally Posted by
Marshal
The coticule can do anything the blue would, and better if you're proficient with slulrry. IMO anyway. I'm kinda surprised you were able to get it set with the C12K, which tells me the previous work on the BBW/coticule must've had it very, very close.
I'm kind of in league with Kees. A 1K synthetic bevel setter is perhaps the best place to start if the issue is more than you're willing to deal with on the coticule. Shapton/Naniwa/Norton/King in no particular order will get the job done. After that you can bounce to the BBW or slurry up the coticule and dilute your way up to a finished edge. Or do like Kees and get a synthetic 4/5/6 K and shift from there to the coticule. Whatever method suits you best.