My first project with this machine was making a cover for my grill. Heavy vinyl backed canvas. Leather needle and heavy nylon upholstery thread. The machine didn’t even slow dow sewing through up to six layers of fabric on some seams. Next project was a couple chair pads. Regular cotton material, #14 needle, regular thread. Beautiful stitching. This is a very versatile machine and I couldn’t be happier with it for a homeowner style machine.