Originally Posted by bejoyce
I would not use Tombows, or any markers, on watercolor paper. The paper is super-absobent and will suck the ink right out of the marker. (This includes Copics.) On watercolor paper, my coloring medium of choice is Stampin' Up! Watercolor Wonder Crayons and an AquaPainter.
Here's some useful information about Copics and watercolor paper, straight from the source:
I Like Markers: Copics & Watercolors, Part 2
Copics work best on cardstock like X-Press-It Blending Card or Gina K. Pure Luxury. I haven't tried them on glossy cardstock, but I don't think that would show them to their best advantage.
Checked out the site you linked me to and found it very interesting in that I don't think I will "waste" my Copics on watercolor paper. I think while I learn anyway, I will use watercolor crayons on water color paper and Copics on the GK. The Tombows don't blend well just bright colors as is. Do you know if there is a blending solution for them?