Quill making is the process of crafting writing instruments from the feathers of birds, typically geese or turkeys. The primary feather used is the primary wing feather, which is strong and flexible. The quill is cleaned, dried, and then shaped by cutting the tip to create a nib, allowing for smooth ink flow. Once shaped, the quill can be further refined by creating a slit at the tip, which helps control the ink's release. Quills were widely used before the invention of modern pens and are still appreciated today for their historical significance and unique writing experience.