My Bernina 440 does sew through must materials but I don't know how that compares to the 950. I did try to hem jeans with it only once. Going over the folded welt part of the jean, the denim pulled the needle right out of the holder. Luckily I was going slow and stopped before damaging my machine. I hem jeans on my old Singer treadle instead of taking a chance of damaging my Bernina.