This paper analyzes the relationship between participation and learning represented
in ethnographic case studies of ten informants aged 23-59 participating in a common-
based peer production site, the FabLab Kamakura community. Digital-based personal
fabrication is a new wave culture of mavens, who are devoted to alternatives to mass
production, and are on a mission “to make (almost) anything”. FabLab Kamakura is a
valuable venue for exchanging information about, for example, digital tools, Arduino,
crafts, textiles, and so on. First we frame this work as an effort to think about their
participation and learning using the concept of “wildfire activity theory”(Engeström,
2009) and “legitimate peripheral participation (LPP)”from Lave and Wenger (1991).
Then we argue an overview of FabLab culture in Japan and at FabLab Kamakura. Us-
ing SCAT methodology (Otani, 2011), we group our findings in two different categories:
(1) learning through participation in FabLab Kamakura, (2) the visualization of weak
ties and mobility through participation in wildfire activities. We conclude that partic-
ipants at FabLab Kamakura are producing and designing available artifacts for their
lives and works, and in doing so, what they are designing is the physical manifestation
of their very thoughts.