Netherlands · Glass craft; Studio glass; South Holland heritage
Leerdam Glas — Unica Traditie
The Leerdam studio glass tradition — the making of unique handblown art glass objects (Unica) at the Royal Leerdam Glassworks in South Holland, where the Dutch glass artist A.D. Copier developed the Unica concept in the 1920s as a program of one-of-a-kind artist-designed handblown pieces produced by master glassblowers. The Leerdam glassblazer reads the correct gather size and heat for shaping through a glow-color-and-weight combined assessment — reading the specific orange-red heat color of the molten glass gather and simultaneously feeling the weight distribution as the gather is turned on the blowpipe.
Risk level: Vulnerable · Not listed; Leerdam glass tradition on the Dutch national heritage inventory
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