I've twisted both kanthal and SS316 - ribbon and round. It works ok - put some tension on it once in awhile before twisting more.
Thing is, they are definitely springy and do NOT want to wrap the ID you want, nor hold in a nice way: they want to uncoil somewhat.
Now, last night I wrapped a 2Ω .5mm kanthal ribbon and vaped it all night. I was NOT excited - it was a pain and didn't want to play.. Today I layered 2 lengths of .7mm, clamped each end with hemo's and, pulled tight, hit them with the butane torch. That definitely helped. It helped enough that I wrapped the coil around my brass rod, left the hemo's to dangle and repeated the heating.. You could see the legs "sag" straight.
Mounting that coil was vastly easier than the night before - flavor is almost where I want it. "Now I know". (of course, I still hate trying to refill the silly torch, but it was vastly better than screwing with a lighter)