Customizable and extensible space frame

Customizable space frame modules that can be joined and extended to arbitrary size. (Two assembled samples are shown in the picture.)
To be used with "Okkake Daisen Tsugi" (https://www.thingiverse.com/thing:5392796), a Japanese traditional wood joinery technique, for firm interlocking. Details of the design can be found in https://doi.org/10.31224/2338 .

The .stl files are just to show what can be printed; the actual use should follow the following steps:
+ (i) find the right gap parameters for joints,
+ (ii) print top grid module(s) and join them,
+ (iii) print bottom grid module(s) and join them,
+ (iv) print a necessary number and shape of diagonal modules and join them with plugs, and
+ (v) join the three major components and insert tenon plugs.

Plugs for Okkake Daisen Tsugi and tenons can be printed with either of (ii)(iii)(iv) or separetely.

Due to the limitations of OpenSCAD, each of (ii)(iii)(iv) requires the editing of the source file but this is clearly indic