How offset lithography printing works

Ever wondered what Offset Lithography (litho printing) is and how it works? We'll take a look!
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This video was filmed for a now defunct project called SkillSchool but I thought it'd be useful to someone!
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Naturally, these videos are aimed at a Key Stage 4 audience (14-16) so please bear that in mind before commented and voting :)

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Intaglio printing can be achieved through the same machine