Office and Craft Room Room Type 6. Release the Pendant: Mamadou removes the pendant, using a special clamp and tapping the edges of the form with a hammer to help release the cast. It is then left to set for 7 to 12 days,  depending on temperature and humidity.  Photos from See How Artisans in the Italian Alps Make This High-Design Concrete Lamp

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6. Release the Pendant: Mamadou removes the pendant, using a special clamp and tapping the edges of the form with a hammer to help release the cast. It is then left to set for 7 to 12 days, depending on temperature and humidity.