The enormous ability to absorb colour, a must for fluid watercolour painting, will naturally stay our secret. But the following is food for thought: The ancient Egyptians provided ample irrigation from the Nile to their fields through canals and reservoirs. We are grateful to our namesake patron Leonardo daVinci for the description of the so-called capillary action: How liquid rises up and across within a narrow hollow. This knowledge underlies the manufacture of our products. Through enforced pressure the drop-free, continuous supply of colour is furthered and a precise tip.