Dog tag in form of a bone. Name and size can be modified in scad-file.1.) copy dog_bone.scad and bitmap.scad in one folder 2.) open dog_bone.scad 3.) modify size and thickness 3.) modify name 4.) print 5.) have fun!If you don't want to print a name on it use "dog_bone_blank.stl"3D letters generator is from http://www.thingiverse.com/thing:2054 thx! it works great!