Deer Ring - STL file has been fixed and ready for the print - STL File has been checked by Magics Software - The ring is fully hollowed from inside with a thickness of 0.75mm - File is fixed for all type printers - No bugs during printing - If you need to make small changes to this model I'll do it for you no extra charge. - If you have any questions I will be happy to answer them - Like and Review The Product If you Like - The file is available in 3 formats - 3DM, STL and OBJ