I am using Red Heart’s It’s A Wrap yarn, warped 66 slots, 132 slots and holes on a 12.5 dent heddle. This yarn is unlike any variegated I have seen. Instead of being a solid piece of yarn, each color change is a new piece, joined with a Russian join. I separated all of the pieces during the warp. If I am to use this yarn again for weaving, I would consider changing colors at a new warp pass instead of sporadically. The yarn is very soft. I warped with one half the ball, the other half is on shuttles - one for each color, and I am doing 12 passes of each color.