Original magazine pages were small (usually 8.5" x 11"). A PDF allows you to print the gear templates and cam profiles at 200% scale without losing resolution. Many PDFs are scanned at 600 DPI, ensuring that a 1-inch cam prints exactly to 1 inch.
This yields a searchable, offline PDF without DRM (for personal use only). automata magazine pdf
The James Coffee Studios page hosts several standalone PDF articles from past issues, such as guides on making pinwheel gears or visits to historical automata collections. Original magazine pages were small (usually 8