Leopold is shown carving a feather into a quill pen, and using the diluted ink from a modern ball point pen to write a letter. Feathers must be cured or tempered before being cut into pens, a lengthy process usually involving heat and sand, and the ink in modern ballpoint pens is very thick and oil-based--too thick to be used with a quill, while the oil would prevent it being diluted with water, as shown.
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05/03/2025 alle ore 09:00
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