Hi Chadg
The Situation you are talking about is normal. There shouldnt be any hardened edge, so this is only an optical "issue". Problem is, that all these towels are made BY HAND. That means there is no machine which is cutting 10 towels per minute. In fact, a cutting process of a towel Needs up to 5 minutes per towel! So because of this hand work, every edge is different. Even the slightest difference in the Basic material could cause a difference in cutting. So this is a tough Job most People couldnt imagine! Beside of this, the ultrasonic blades are changing from "brand new" to "used", at the end of the life circle you must replace the blades. In the space between, the edges could change.
Anyway, what you show is normal. Any fabric residue on the edges could be usually easily removed - that is also caused by cutting. Dont know how to explain in english, I will try: If this is a common word: An ultrasonic cut with this thick fabric could be compared with a "Perforation". That means, that when the cut is done the cutted material is NOT falling down, no, the cutting guy must remove the exceed part of towel. Sometimes this goes very easily, sometimes a Little bit more tough. So during this process sometimes small fabric residue could be left on the edges.
Please Keep always in mind: HANDCRAFT makes every product "unique" and could cause differences from any product you buy. Thats the challenge for us but at the end this is one of the PRO Facts of Microfiber Madness.