From hand-drawn leaflets to 3D software: how LEGO instructions evolved

LEGO’s step-by-step building instructions grew out of a 1955 shift in the company’s product strategy. Before then, buyers got only box-art inspiration and separately sold ‘idea books.’ When LEGO introduced the ‘System in Play’ concept and its first model-specific sets like Town Plan No. 1, customers needed a reliable way to reproduce the pictured model, so the first simple instructions appeared. Even then the company hedged between two philosophies documented in internal 1960 debates: hand children finished blueprints, or give only inspiration and let imagination fill the gaps. Early instruction sheets reflected the compromise, pairing build steps for the boxed model with alternate-build ideas on the reverse.

Production was a slow, physical craft. Designers broke a finished model into steps, rebuilt and photographed each one in exact registration, then shipped the photos to external Danish partners — chiefly Palle Munch’s studio in Kolding, LEGO’s main instruction supplier from 1967 to 2003 — who redrew every step by hand at enlarged scale before another firm added color. The workflow industrialized in the 1980s: LEGO stood up a dedicated instructions team in 1983, and Palle Munch adapted a TV stage-design 3D tool called ‘Monster’ into a purpose-built drawing program named ‘Panter’ (Palle’s New Drawing Tool), first used in 1986 and kept in service for 17 years.

The piece is a straightforward corporate-history retrospective rather than a technology or security story. Its throughline is the migration from manual, photograph-and-redraw processes to computer-aided 3D tools — Panter, then Panter 2 with color, and eventually ‘3D Vision’ in 2003 — illustrating how a mass-market product quietly built its own specialized software tooling and vendor pipeline over five decades.