In this video I will be showing how I made two ingrain cutting boards out of one piece of walnut. The walnut board was roughly 6 inches wide by 122 inches long and 2 inches thick. I made two end-grain cutting boards approximately 12 inches by 24 inches. This video details a juice groove and handle grooves on the bottom. I finished sanded the boards from 100 grit to 320 grit. Before applying mineral oil, I cleaned all surfaces with mineral spirits. Once the mineral spirits were dry I used Howard's cutting board and Howard's butcher block conditioner.