In comparison, both hand and wheel made pottery can be similar in appearance and often difficult to discern.  By using the coil method, the vessel’s surface can be smoothed to hide the seams and carefully evened out on a potter’s wheel to achieve a wheel made effect.  However, the interior will readily indicate technique.  Wheel made vessels have symmetrical walls that are typically marked with grooves from the potter’s hands, while hand built pottery is noticeably uneven, and therefore easily identified.