I almost finished sewing a simple cut slinky knit skirt. The side seams were fine with an four thread overlock with differential feed at 2. I tried to stay stitch the upper edge and then sewed with a double needle to create the elastic casing. I had to sew it three times because sometimes I was not catching in both layers of fabric.
The problem is the hem. I tried using a roller hem on the serger but it was terrible. I think that this knit is too heavy for it. I ripped out. I think that the double needle is not going to look good because it is coming out too wavy on my sample.
What technique is good for hemming slinky knit? Or can I just leave the edge raw?