I finally caved and bought my own supplies to try marbling at home and wow, what a difference time and good materials make to the finished product:
I did have a grasp on the basic process already from the class I took in June, but the results at home are so much better–the colors floated perfectly and stuck to the paper just fine.
(Not shown, using the comb to make the non-pareil pattern, because that takes two hands.)
I printed 12 sheets and got 8 that I really like, but none of them were flawed because of the supplies, just beginner printing errors. I highly recommend the supplies from Galen Berry, aka MarbleArt. I got his paints and instruction book from Hollanders but I think they’ve stopped carrying the full line–I had to get the carrageenan and alum and a comb straight from the MarbleArt site (via sending an email, lol).
I make a lot of things and I’ve been doing a lot of my hobbies for a long time, so I don’t get the “I can’t believe I made that!” feeling very often. But look at this! I can’t believe I made that.