This Traditional Heritage line of furniture is by Gerlach & Heilig, a/k/a designers Kyra Heilig and Lenn Gerlach. Though based in Amsterdam, the duo originally hail from Germany's Black Forest, where they drew inspiration for the line.
"Designed as display furniture for an exhibition on the cultural heritage of the Black Forest, this collection is a reinterpretation of traditional wedging techniques from woodworking. CNC milled wooden parts such as the seat of the chair can be locked together with the legs without additional screws or glue needed."
"The furniture is made of silver fir. This type of tree has a long tradition in the Black Forest and, thanks to its great qualities, will also be resistant to climatic changes in the future. Carpenters in the Black Forest should once again be able to identify with the processing of their own wood and the underlying properties. Coniferous wood is soft, but that is precisely why it is particularly suitable for wedging."
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