The Singer Heavy Duty Sewing Machines (https://www.singer.com/Heavy-Duty-4452-Sewing-Machine) are perfect for your tougher projects. With 50% more power, these machines can work on sturdier fabrics, such as jean material or canvas, with ease. They are not industrial machines, so materials like leather will still have trouble, but they are much better suited for thicker materials than the Confidence machines.
The Singer Heavy Duty also has a adjustable presser foot pressure, you can also sew very lightweight sheers, and the stainless steel bedplate allows fabrics to glide over the machine with ease. There are 32 different stitching patterns including a one-step buttonhole, giving you consistent results every time for projects you’ll be proud to say you made yourself.
The Top Drop-in Bobbin is not only easy to thread, it’s easy to see so you won’t run out of bobbin thread in the middle of a seam. Thanks to the SINGER Sewing Assistant App, help is available anytime you are, to help you learn how to set up to sew various fabrics and techniques.
— (singer.com)