I decided to fill a couple of the Tria brush markers with Ecoline liquid watercolour inks.
I don't know how other people go about filling the reservoir of their brush pens. I use this very ad hoc method - a small glass of rice to prop up the reservoir, and a straw to transfer the liquid. I suck the liquid into the straw, cover the top with my finger to keep the ink inside, then transfer the straw to the reservoir and let the liquid out.
Do you use brush pens? What method do you use to fill them up?
Pressing the sides of the pen a few times and wiping the tip with an absorbent tissue gets the ink flowing. I think I need a couple more of these pens - a yellow would be nice and maybe Burnt Umber or Sepia.