Tumbler Knife Sharpener Review: BESS Test Results in 2026
My knife measured about 500 BESS before I touched it. After 2 minutes with the Tumbler knife sharpen, it read about 180. Lower is sharper, so that’s a real change, and I measured it on an Edge On Up tester, not by slicing a tomato. The Tumbler is a rolling sharpener: a magnetic block holds…