Stop Trusting Grit Ratings — Measure the Scratches скачать в хорошем качестве

Stop Trusting Grit Ratings — Measure the Scratches

This video introduces a methodology for objectively comparing sharpening stones. Instead of relying on grit ratings or subjective feel, I analyze the scratch pattern produced on the edge using microscope imaging and statistical measurements. The protocol measures: • scratch width distribution • scratch spacing • scratch depth variation • correlations between width and depth By sampling hundreds of transects across the edge, the scratch pattern becomes a quantifiable fingerprint of the stone. In this first experiment I apply the method to a 220 grit diamond plate, measuring tens of thousands of scratch segments to see how uniform the abrasive actually is. This is the beginning of a series where different sharpening stones will be compared using the same statistical protocol. 0:00 Introduction 0:24 Looking at the scratch pattern 0:30 Diamond plate under the microscope 1:06 Particle size mapping 1:47 Statistical analysis: 56,964 scratches 2:43 The top 5% define your edge 3:24 Is this just bad technique? 4:31 220 grit is a label, not a promise 5:42 How to compare sharpening stones 6:46 What comes next #knives #sharpening #knifeedge #microscope #knifescience #sharpeningstones #diamondplate #edc #knifecommunity #metalworking