Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Broke after ONE MONTH

I've only had this machine for a month. ONE month. And in the middle of a project, the lower thread started to tangle. I've replaced the bobbin, made sure it caught on the spring, etc., etc. I've read the manual, opened up the plates. Nothing. This is not worth the time or the stress. I'm changing brands.