S14E11 — Graphite Pencil Leads, Clarinets, Special Effects
Graphite and clay are blended, extruded into slender rods, fired and treated to produce smooth, durable pencil leads. Seasoned wood is drilled, turned and fitted with a complex key mechanism to make clarinets, while special-effects artists use sculpting, mould-making, flexible materials and mechanical devices to create convincing physical illusions.
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