I have used my Shavemac/APShaveCo STF XL at least 4 times since Thanksgiving and have lost at least 11 fibers from the knot... I'm thinking at this point that I just received a bad knot overall and will just call it as it is, finished!! I may or may not look at another down the road but this one will make its way to the trash and I seriously can't recommend this knot to anyone at this time!!