แผนภาพอธิบายการทำงานของเครื่องพิมพ์ 3D แบบ FDM

A clear, simple explanatory diagram illustrating how an [FDM 3D printer] works. The illustration shows [filament spool feeding material into the extruder motor], passing through the [heating block element], and the [nozzle depositing melted plastic layer by layer onto a print bed to construct a 3D object]. Isometric 3D vector illustration style, clean white background, clear directional arrows showing process flow, minimalist color palette, modern educational infographic aesthetic.