12-22-2015, 02:14 AM
From what little I see posted (snippets here and there) there is not consistency between converting micron measurements (like with lapping film) to a "normal" grit equivalent. I thought I had a handle on it until I ran into a chart on "rocksandgems" (I think it was) which had totally different numbers from woodworking sites. Is there a standard chart for woodworking that shows various micron designations and the "grit" (True Grit, if you're John Wayne) equivalent? Thanks. john
I do, therefor I am.