Update: I edited and added additional information and pictures to "Simplified and Consolidated Tutorial/Pictorial for DBV #3." Go to Post #1 of this thread and scroll down past Graph #55. Included are photos and step-by-step instructions required for preparing Rite Aid "First Aid Rolled Cotton" so it will perform like Rite Aid "Natural Absorbent Cotton."
I hope this helps.
Ah, thank you, BMF! I'd moved away from cotton entirely for several months, but now that you've discovered a suitable way to treat readily available cotton for the purpose, I'll give it a shot. (It looks like how a pastry chef makes croissants!)