Not much, but there is no volume requirement.
I'm going ot have to try someone new with me next weaving to try to get the tension right from the beginning. It has been suggested that I pull it as tight as possible from the first weave, possible using toothpicks so it can be undone easily if it causes problems. But anyway, I've gotten over the first few inches where I play with the width and now I have easy weaving for the rest of the band.
I like the touch of sparkle from the silver threads, and the high-contrast from the teal edge and orange weft.