You can make them easily.
You can use the pliers to twirl them around or you can make your own tool to twirl them on just by getting a small wooden plaque (Michael's or Hobby Lobby carries them in their woodworking section) and a few nails (with the heads cut off with wire cutters). I use a "tool" like that to make my metal hangers for my stained glass projects. I'm including a picture below. For the twirls I would just take a couple of small nails and nail them down in the middle of the wooden board on each side of the wire. You want them to be right next to the wire on each side, that way when you place the wire inside them it will hold it in place so you can then twirl the wire around them. With the heads cut off of the nails it is easy to slip the twirl off when you are finished, if you forget to cut the heads off you will have problems with this since the nails have to be right next to the wire.
I wish I could have found my form that I use for these hangers, but we're moving so it may already be packed up.
Anyways, as you can see, they are still pretty smooth after doing this.
I hope that helps!