I spent the last several weeks building this surface grinder attachment for my 2x72 grinder. I take no credit for the design; I simply looked at what others had done and took those features that I liked. I gave it a test run on one of my folder blades and it kept tolerances of 1/2 a thousand. Not too bad for a shop built tool. Let me know what you think. I have a full WIP on the blog section of my website if you care to see how it was built.