My Viking Designer 1 sews through denim like a knife through butter! My husband wanted me to hem a pair of jeans for him. I really didn't want to but since I had never sewn denim, I looked up instructions in my D1's manual. It went over the folded over seams like quilting cotton. But I think any good machine would work if you make sure you have denim/jeans needle recommended for your machine. Happy sewing!