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====== Masami Ōmachi: Paper-Based Solid Models ======

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.

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===== Published Articles =====

**From the 1955 issues of *Sekai no Kōkūki***:

* [[en:authors:omachi-masami:paper-solid:1955-02|February 1955: Paper Solid Model (1)]]  
　— Main wing and engine section\\
* [[en:authors:omachi-masami:paper-solid:1955-03|March 1955: Paper Solid Model (2)]]  
　— Fuselage and tail unit

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===== Overview & Characteristics =====

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* A pioneering attempt at **fully movable, all-paper construction in 1:50 scale**  
* Internal mechanisms enabling retractable landing gear, ailerons, and flaps  
* Material-specific considerations—humidity, paper fiber direction, and paper selection  
* Not a simplified alternative to wood, but a **distinct technical methodology**
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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.

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===== Related Pages =====

* [[en:authors:omachi-masami:start|Masami Ōmachi — Author Page]] \\ 
* [[en:authors:omachi-masami:episode:start|Episode Collection (photos, letters, background materials)]]\\

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===== Editorial Notes =====

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* Original text has been preserved wherever possible, with minimal annotation for clarity.\\  
* Images are reproduced from Ōmachi’s personal album and organized for publication.\\ 
* Bibliographic information and quotation ranges are properly managed; no unauthorized reproduction is made.\\
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===== Planned Additions =====

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* Reconstruction tests of the paper-based method (comparison with modern materials) \\ 
* Redrawn high-resolution diagrams of movable mechanisms
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