I am almost there, but not quite. I have been struggling with these things for, gosh, probably two years. I have a round carbide from Lie-Nielsen, but no teardrop cross section. Using jojoba oil for lube. I have a rectangle by Two Cherries with a concave and a convex end that I have been working on, and a full set of L-N scrapers waiting in the wings for when I have my act together. My set of DMT diamond stones came in this week, 300-600-1200 and 4000 grit. It made all the difference on my 2 cherry trainer scraper. I filed it square, again, ran it over all four stones to hone the edges, pulled off the face with the carbide, then stuck it in a vise and made a hook with the carbide, utter bliss. I finally got it, I was making tornadoes with the 2 cherry scraper on edge grain poplar, face grain hard maple, edge grain hard maple, end grain poplar, end grain hard maple, just killing it. I felt taller, my previous honing system just wasn't good enough for cabinet scrapers. So i opened up my L-N collection, thick and thin, rectangle, comma with a point and comma with a rounded point. Out of the six, I picked the thinner stock rectangle. The thick stock rectangle was about the same thickness as my two cherries. I ran the LN thin rectangle through my new working system, and i am making dust again. WTFBBQ?