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How It's Made · S30E06

Spiral Stairs, Pita Bread, Exhaust Headers, Moulded Limestone Artwork

Still from How It's Made S30E06

Summary

Steel columns, steps and railings are measured, shaped and welded into space-saving spiral staircases. Yeast dough is mixed, divided and baked at high temperature so steam inflates each pita; metal tubing is bent and welded into exhaust headers; and crushed limestone mixtures are cast and finished as decorative artwork.