What process was used to prepare a goose or swan feather for use as a writing tool?

Answer

Hardening the barrel by heating it, then cutting the tip into a point

The process began by hardening the feather's barrel, often through heating, followed by carefully cutting the tip into a writing point, a procedure known as curing or quilling.

What process was used to prepare a goose or swan feather for use as a writing tool?
inventionHistorypenwriting instrument