What is Underside Couching, and how does it differ from regular couching?
In regular couching, you lay a (usually thicker) fiber, and place it on top of the canvas, in the area you wish to cover. Anchor the (usually finer) couching thread securely on the back. Come up right next to the laid fiber, go around it and back down through the same hole, or one right next to it. For normal couching, pull until the couching fiber is snug. For underside couching, pull tighter until you hear a small pop, and the laid fiber is actually pulled down through the hole and appears on the back of the canvas. Move a few holes further along the laid thread, and repeat. Continue until the area as the desired coverage.
