I thought I would update on my Red Cashmere test! I mixed the powder with 25ml of water back in December and before going home for the holidays (around the 20th) I filled the ink in a Pilot Custom 74. It's one of my only c/cs so I love using it when I'm still trying to figure out how an ink behaves before putting it in one of my go-to piston and/or vintage pens.
I used the pen lightly until about the second week of January and decided to leave it inked for another couple weeks to see if/how it would evolve. Fast forward to today. The ink has been unused in the pen for about a month and it started immediately without any priming when I tried to write with it. There wasn't any ink dried in the feed or on the nib. Cleaning was very easy using a bulb syringe and the converter had 0 staining after rinsing. Overall I would say this is one very well behaved ink!
Edited by bstnnyc, 11 February 2015 - 06:22.