Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Safety Concern

I purchased this grinder locally yesterday(not through amazon) for $39.99 .First I washed it thoroughly ,looking for any stains or metal shavings. I began to grind some chicken ,I noticed that the ground chicken had a gray tint to it with small metal shavings! and it got worse as I kept "grinding",I noticed a lentil size hard metal chip with sharp edges in the ground meat!what if I was grinding something of a dark color that made noticing the metal piece impossible?? what if it had been consumed? broken teeth would have been the best case scenario !Since I had carefully washed the "grinder" and looked everywhere in it ,the chip wasn't just sitting in there ,it must have shaved off then.I threw away the ground chicken ,washed the grinder to return it . This morning I noticed rust all over the blade and front pieces ,what a masterpiece.