I wasn't exactly impressed. There were 24 pieces and it only took 17 seconds per. Before one was finished, I was able to have the next one ready so it didn't sit idle more than a few seconds between parts. The results were pretty good except on the last 4. It seemed to stop rotating toward the end of each one and the image was distorted. I was thinking it might be a stepper motor overheating thing. Is this a common occurance?