Re: [Marbling] surface treatments
I'm glad you're enjoying the Boku Undo colors. Another way to protect the
finish of marbled papers and keep them from rubbing or chalking is to spray
them with a fixitive like Krylon or Blair workable matte fixative. The
product is used by pastel and watercolor artists to protect artwork from
smudging. I can't vouch for its being archival and it is noxious and should
be used with a mask or outdoors. But it does dry clear and protects work
nicely. It may also give your rice paper a better finish for origami folding.
I can spray a piece of the paper and send you a sample if you want to try it.