11화: 센쿠, 석영 모래와 유리로 수카에게 안경을 제작하다

Senku uses quartz sand to produce glass, which he uses to create glasses for the short-sighted Suika. Lacking the skills needed to blow useable lab utensils, Chrome brings in a skilled craftsman named Kaseki, who is able to quickly adapt to the unfamiliar substance. To break in their new lab, Senku offers to make Ginro a silver spear as part of a dangerous mission. (Source: Wikipedia)

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