Despite recent calls for processual analysis of routines creation, little work has been done to investigate the entrepreneurial mechanisms that explain the creation and adoption of new routines. This paper provides a processual contribution to the study of organizational routines by proposing a model for routine creation, based on an analysis of collective entrepreneurial actions. Using an entrepreneurial bricolage lens, we show how agents, during the creation of new routines, develop mechanisms to adapt firm processes, enact external constraints and validate novel practices. Our analysis is based on a three-year collaborative study in a French biotechnology firm. We develop a processual model of routine creation comprising three phases: scanning, performing and adopting. The model provides new insights into the interplay between artefacts and entrepreneurial actions in the creation of new routines.