I discovered this stuff back in 2012 when my quilt machine's needle stopped in the down position as my robotics kept going. My 1st quilt on the machine too and for my mother no less. Used the stuff to repair the rip and so far its held up nicely. Have used it a couple times since then so for me it was worth purchasing it. Haven't had to use it in a couple years but still keep it around just in case.