De Held Jozua, Wind powered sawmill in Zaandam, Netherlands.
De Held Jozua is a wind-powered sawmill in Zaandam with a rotating wooden body mounted on a low brick base that positions itself to catch optimal wind for cutting timber. The building contains three sawing windows and two sleds for moving logs, all protected by a distinctive black tar coating on its wooden exterior.
The sawmill originated in 1719 when Hendrik Claasz de Boer received permission to construct and operate a wood processing facility. In 1904, the wooden structure was upgraded with a cast iron windshaft installed by a major metalworking company, greatly improving its sawing capability.
The mill displays Dutch craftsmanship through its distinctive black tar-covered wooden walls and three visible sawing windows that reveal how work happened inside. Visitors can see how the local community in the Zaan region values and maintains these industrial traditions as part of their identity.
The mill operates on Saturdays where you can watch the traditional wind-powered mechanisms cut timber using historical methods. It helps to check weather conditions ahead of your visit since operations depend on sufficient wind.
The mill operates through a complex internal system of about 72 cogs that translate wind power into precise cutting motions for the three frame saws. This mechanical network shows how Dutch craftsmen solved problems of power transmission long before modern engineering existed.
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