I just started doing some gum printing and have realized how critical the paper and sizing are to the process. The Strathmore Bristol Vellum I successfully use for cyanotype doesn't clear the highlights if unsized and doesn't coat well if sized with diluted matte acrylic medium. I also tried some hot press watercolor paper I had and it didn't work at all. Before I buy some new paper and sizing materials, I'd like to hear what paper and sizing formulas are working for other gum printers--especially papers that don't cost a fortune. Thanks.