Dip Pens aren't cartridge fed like fineliners and brush pens. In its place, you dip them into a bottle of ink and re-dip as soon as the ink operates out. This technique is more akin to the kinds of pen and ink drawing finished by artists in the earlier. https://inkdrawingforbeginners54321.prublogger.com/34758465/the-2-minute-rule-for-ink-pen-drawing-techniques