Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not for heavy fabrics

This machine has a lot of bells and whistles: One-step buttonhole, 60 stitches, 7 different buttonhole styles, etc. It's also got variable speeds which is nice for beginners, and comes with a package of presser feet that would cost $50 or so purchased individually.However, my major disappointment was that it did not sew through more than 3 layers of denim without putting up a fight. The needle gets stuck in the fabric, it makes a horrible noise, and then displays an error message. Not so good if you want to do something as simple as hem a pair of jeans. Going slow or fast does not seem to make a difference. In addition, some of the fancier buttonholes (keyhole for example) look terrible.My experience has been that if you want a computerized machine that sews through heavy material you're going to have to pay around $300. The Brother Project Runway machine goes through thick material without balking, unlike this one.