I love this machine! I can sew through 5 layers of denim like it was butter! Also has room to do quilts, it's HEAVY! Built good. Haven't figured out the self threader on this one. I need to go look on youtube for that. I am very happy I have this machine to use on my heavier duty projects. It's fast too so be careful on the lead foot at first! You won't be sorry if you purchase.