These warps were wound with one strand of Bambu 7 and one of a highly textured yarn. I wound them both at once, with my index finger between them. I find that winding them separated by a finger means they don't grab onto each other and snag during beaming.
When I thread, I choose the yarns randomly as they present themselves, except at the selvedge. Since the weave structure is plain weave, I manipulate the threads so that I have two Bambu 7 forming the selvedge. This gives a nice tidy edge to the scarf.