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10:01, 30 August 2018 Cutting a quill:
To "nib" the pen, rest the underside of the point on a smooth, hard surface. Thin the tip from the top side by 'scraping' the blade forward at a shallow angle; then make a vertical cut, either at right angles to the slit or obliquely. On a very strong feather the last cut can be repeated to remove a very fine sliver, avoiding a rough underside on the tip of the nib.