I got mine about a month ago. I finally got a few logs to try it out on. I was very impressed. Very first core came out right at the depth I wanted. All of the bowls were the same diameter but some were deeper than others. I was able to adjust it to core the same width but not as deep. A friend of mine with the Oneway said he can’t do that with his. I heard a lot of horror stories about learning curve and problems but I thought it was very easy to use and accurate right out of the box. A friend gave me three Mamosa logs and I cored out six bowls.