DASYN is developing innovative 3D printing technology. We have presented a poster on a new technology called the "natural-direction 3D printing" at the 24th SFF Symposium. The natural-direction 3D printing technology consists of field-oriented design technology, field-based tool-path generation technology, and non-horizontal (natural-direction-followed) 3D printing technology, which are patented and under development, and a new type of object model called the field-oriented solid model is used. The poster explains the outline of these technologies and the field-oriented solid model. The abstract and the poster are available from the author's personal site.