Dip Pens are not cartridge fed like fineliners and brush pens. As a substitute, you dip them into a bottle of ink and re-dip after the ink runs out. This system is more akin to the types of pen and ink drawing carried out by artists on the past. https://ink-drawing-for-beginners99876.designi1.com/56640934/not-known-factual-statements-about-ink-drawing-for-beginners