This prototype was built largely from Meccano, plus a number of non-Meccano parts from various sources. Most of these are substitutes for standard Meccano parts. A few are custom-designed, notably the carefully-shaped pieces of aluminium sheet which do the actual folding, and the plastic paper guides; it was not feasible to make these from Meccano parts on the small scale required.
The pictures below show some general views of the machine from various
angles; click on them for an expanded view. There are also some closeups
of various parts, an action sequence showing
the various phases of the operating cycle, and a movie
of the machine in operation.