The study presented is part of a work-in-progress project of developing a mobile application for smartphones, Talking Tools (TT). The first context TT is developed for and tested in is sloyd education [Swedish: slöjd], a compulsory subject taught in Finnish schools. In sloyd learners design and manufacture unique artifacts in various materials (textiles, wood, metal, and electronics). The process-based work flow of sloyd lends itself well to this kind of educational tool, which aids multimodal documentation, communication, and instruction. The empirical study targets what student teachers (N=11) microblogged about and the character of the blog posts during a sloyd project. A sociocultural perspective of appropriating new tools for learning is used as a theoretical frame, as well as views on multimodality and transmedia. Their sloyd process is discussed in terms of transmedia storybuilding, as learners build their own story as a flow of content through their documentation and interactions.