The STL format is ready for printing or for the ArtCAM program. Format :STL. The model is ready for prototyping with CNC machining and 3D printing. Model for CNC machine tools base-relief sculpture relief for program like Artcam, Aspire or others programs. Model size: X:818 mm, Y: 708 mm, Z: 25 mm. You will be able to change the model sizes. The model is in the rar file. Select rar file, Right click mouse button, open drop-down menü, select extract here from menu list . Previews are rendered with keyshot. If any question please don't hesitate write me. Thank you for advance . Thanks for downloading my models.