Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor quality--Plastic gears subject to melting

This popper is very thin, light-weight, and low quality. The gears are made of plastic, which can melt. I bought it to roast coffee in, but I'm certain the gears would melt after a couple of uses, so I am returning it. I would recommend spending a few extra dollars and buying an all stainless steel popper. It's much heavier, has steel gears, and will last much longer.