These are 3d carving files. Dimenional 3d clipart models for use with any Router using appropiate 3D software. Most of our 3d patterns are available in PTN format models for the Carvewright machine ONLY and STL format models for most all other systems using appropriate 3d software and can be adjusted to almost any size or depth. Also available are TIF format for 3d laser engraving. Please make sure you order the proper format for your machine. 3D CNC Stl patterns of animals and related items.