How do 3D printers work? | A Sketchbook Explainer

How do 3D printers work? Slice a toy boat into layers, watch a hot nozzle draw each one, and trade speed for smoothness. Interactive, sourced from DOE, NIST and FDA. Chapters 0:00 Start 0:29 Slice it like bread 1:13 A robot glue gun 2:01 Thin or thick? 2:40 Honeycombs and helpers 3:24 Beyond plastic string Narrated for ages 7–12. Facts checked against trusted sources. ahaboo makes hand-drawn, narrated explainers of how things work, for curious minds.