Hi there! I just purchased the HeartTruth last weekend. I'm a very newbie sewer, so I don't know if this will help any, but at the dealer where I purchased the machine, he demo'd some denim fabric, folded over twice and this machine sewed through it without any problems. I was pretty impressed! He did say you'd need to get a sturdier needle to be doing sewing such thick fabric like denim, but it seemed like sewing through several layers was not going to be a problem for this machine.
I can't say out of personal experience if it does or not, as I haven't gotten around to doing much other than sewing thin cotton layers, but I'm really enjoying the HeartTruth as my very first sewing machine
