Instruct: Classify Amazon reviews into positive or negative sentiment
Query: doesn't hold up

I have been through three of these now and I am completely done. The only reason I got the last one was because the store offered a replacement insurance for an extra five bucks. When the sharpener wore out after 3 months, the store said the manufacturer's warranty (2 year) took precedence. Their process of replacement is not worth the time, and do I really want another one anyway???My first grade teaching partner has had the exact same experience with these. We sharpen a lot of pencils every day in first grade, and these don't last.