During the postwar period—when wooden solid models were the dominant form— Masami Ōmachi pioneered a unique approach using thick paper and celluloid to create fully movable, paper-based solid models. This page compiles his representative construction articles (February and March 1955), together with technical methods, references, and contextual background.

Ōmachi’s experiment was not merely paper craft as a substitute material, but rather an experimental craft that balanced scale fidelity, structural strength, range of motion, and geometric accuracy—a fundamentally different concept from contemporary papercraft.
It should be noted that the expression “paper solid model” contains a conceptual paradox, since *solid models* traditionally refer to aircraft carved from *solid materials such as wood*. However, Ōmachi transcended this limitation by realizing a solid-modeling mindset through paper, establishing a field that was uniquely his own.

From the 1955 issues of *Sekai no Kōkūki*:

* February 1955: Paper Solid Model (1) 　— Main wing and engine section
* March 1955: Paper Solid Model (2) 　— Fuselage and tail unit

Although Ōmachi openly stated that he was not skilled with wood-carving tools, he did not position his work as a compromise. Instead, he proposed paper construction as a creative replacement, demonstrating a valuable form of diversity within postwar modeling culture.

* Masami Ōmachi — Author Page
* Episode Collection (photos, letters, background materials)