[s4e4] Windmill Acetone Celluloid — Firing Pin

: An early plastic made from nitrocellulose and camphor. It is famously highly flammable and was the standard material for motion picture film until the mid-20th century.

The softened material is molded or used as a volatile fuel source. [S4E4] Windmill Acetone Celluloid Firing Pin

is used to soften or partially dissolve Celluloid (like old film or guitar picks). : An early plastic made from nitrocellulose and camphor