Stringing
The basis for this idea is a quilt frame, 40 Ø cm. Take the inner ring of the quilt frame and cover it with warp yarn by repeatedly knotting individual warp yarn strings on one side, then fix them on the opposite side as well. You will need 9 cords (makes 18 spokes).
Since weaving always requires unequal numbers of spokes, stretch another string to the middle and knot it to the other strings. The spacing of the spokes should be as equal as possible.