when i ripped the seams of a corded seat cushion to uses panels as pattern i found three sets of stitches
the cording , panel 1 and panel 2
each was sewn with upholstery thread .... *BUT* is it neccesary/recommended to sew all three seams with upholstery thread ?
could one just use lighter thread weight (eg. heavy weight household thread) for first two seams then finish with upholstery thread ? it seems upholstery thread is so strong that three seams is overkill plus wasteful /expensive
thanks for any advice, rob