Biogun is a distributed handheld extruder that enables the fabrication of bio/waste materials into useful objects in a new and personalised way. It democratizes making by hacking the function of an existing screwdriver drill, using digital fabrication tools and accessible materials. By offering the practicality of mass-production machines into a handheld product, new forms of self-expression and creative exploration become possible. In the biomaterial world, most of the attempts of creating and utilizing waste material have been resulting in a flat sheet form. Biogun provides new and fun ways of exploring biomaterial forms through an accessible and distributed specialist tool while tackling the waste stream.