This article examines how new forms of learning and expertise are made to become consequential in changing communities of practice. We build on notions of scale making to understand how particular relations between practices, technologies, and people become meaningful across spatial and temporal trajectories of social action. A key assumption of our perspective is that the scale relations that give meaning to our actions are not natural but are contested in social, cultural, and political projects. Studying these contentious activities can help us understand the nature of changing participation in dynamic and historically developed practices. Using case materials from 3 groups engaged in the local food justice movement in the western United States, we illustrate their engagement in equity-oriented scale making. Defining features of this work included identifying leverage points within inequitable systems; developing strategies for remediating scale relations to include the perspectives of historically marginalized groups; and coordinating trajectories of practice across settings, activities, and time so that these interventions became increasingly consequential. We conclude with a discussion of the significance of equity-oriented scale making as a lens for organizing design efforts and for studying their implications for nondominant communities.