I tried unsuccessly to hem a slinky knit using the coverhem on my serger. I couldn't avoid skipped stitches. I stopped sewing to go to the grocery store and on the way it dawned on me - "Why didn't you try your blindstitch machine?" (I have a Rex model RX-518. I've just had it a few months.) As soon as I got home I ripped out the coverhem. I put matching thread on the blindhemmer and set it for skip stitch. In no time at all I had a PERFECT hem! No stretching, no skipped stitches ... it was just right.
I know not very many of us have these machines in our sewing rooms, but I do some alterations and this was an investment I made so I could do more professional and easier hemming.
I'm so happy knowing that I can use this for more than basic pants hemming.