Instruct: Classify Amazon reviews into positive or negative sentiment
Query: semi-pitter

Perhaps, the sour cherries were too small for the pitter, but very few attempts resulted in a clean "pitting". The pit was usually still attached to the cherry and had to be removed by hand. After placing cherry in pitter, you press the plunger, remove semi-pitted cherry, remove pit, and place pit and cherry in respective containers. The procedure is a bit more compex (and messy) than I envisioned. Next time, I will use a knife for a few pounds to see if the Oxo is worth the trouble. The item is well made and comfortable to use but just didn't work for me.