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This paper presents a study of developing computational thinking (CT) practices through digital fabrication activities, such as creating tangible artefacts with digital tools. The aim of the study was to explore the potential of digital fabrication activities for developing CT practices. We investigated three cases of school visits where the students engaged in digital fabrication activities in Fab Lab Oulu, northern Finland. Based on the perspectives of the teachers who participated in the activities and facilitators who ran the activities, we identified that digital fabrication activities have the potential to develop CT practices, especially formulating problems in order to use a computer for assistance, thinking logically, and implementing possible solutions efficiently and effectively. The findings suggested that the nature of digital fabrication activities, such as frequent use of computers and complex problem-solving, encouraged development of CT practices. However, we also uncovered the possibility that CT is not being adequately defined by the teachers and facilitators.