Review on Dual-Sided Ultra Sharp Diamond Sharpening by Daryl Fitch

Although I initially liked this product, it didn't hold up to my relatively low level of sharpening. I purchased this item about 1.5 years ago and while the very thin side still does a great job of finishing the edge, the rough side just doesn't cut like it used to. I've basically given up using it to attach bevels to cutting tools as even that can take hours on small chisels. It's one thing when I'm sharpening dozens of items, but I have a few planes and a few chisels and sometimes a kitchen knife. While I was really impressed with the initial quality, it just didn't last long.