I was working on a 7 inch high kitchen utensil holder. I did the initial hollowing with a forstner bit. I ordered a Sorby Turnmaster with round carbide bit. This tool is solid and well built, but the tool is centered on the end and the diameter of the shaft is about 3/4 inch so it is not built for side-scraping. The carbide bit was as dull as a Sunday-school picnic right out of the box, and never got any sharper. It made dust and little else. So I made a holder out of 1/2 inch steel mounted in a handle. The end was filed flat and a hole was drilled and tapped off-center so it was suitable for end scraping and side scraping. I ordered two bits from Amazon. The square with eased corners was from Easy Wood Tools. It was sharper than the Sorby but nothing to brag about. The square one was made by Yufutol. That one was SHARP. The problem with scraping deep in the vessel was chatter. If I ever do another deep vessel I will build a tool holder out of 3/4 steel with the bit mounted off center. I wound up doing the last 2 inches with a sharp bowl gouge. I believe in sharp tools! Note: The Sorby bit screw hole is not counter-sunk but the other two were.