In this paper we discuss about an efficiency of voxel model data in 3D printing system. Particularly, we propose a voxel-based data structure that is called “FAV” (Fabable Voxel) file format, where information about connection between each voxel can be stored, for designing, analyzing and fabricating 3D object seamlessly. This kind of data structure based on networked voxel model has significant advantages: storing network information for fabrication or simulation. We propose some methods for generating tool path from voxel model data directly and show that dynamic simulation with this networked voxel model has more accuracy than non-networked voxel model.