Review on 🔪 ProntoPro Hone Manual Knife: Fast, Precise Sharpening for Euro-American and Asian Style Knives - Diamond Abrasive, 3-Stage, Black by Debra Depts

I bought this based on a review from America's Test Kitchen which said this sharpener was recommended. Although I used the same knife that ATK used in their test (Victorinox Fibrox 8 in Chef's Knife) in the 15 degree slot as in the test, my results with this sharpener were terrible. The blade is hollowed out, the cutting edge completely destroyed. I switched to the 20 degree slot thinking that might be the problem and spent much more time than the sharpening slot instructions recommended trying to fix the blade to no avail. I had to buy a new Victorinox chef's knife and am planning to return this sharpener. . A real disappointment and I would test this very carefully on one of your inferior knives before building anything you really like into this tool.