Machining a simple centering fixture. I used one of my “sample” swivel bolts, cut off the threaded end and drilled it for a socket head bolt. I’m using a Cleveland 3/4” counterbore tool with 1/2” pilot. Once bolted to the table I indicate the center and will use that position to help clean up the 4 mounting ears on the swivel base. This’ll be a cosmetic cleanup only. It’s not necessary but since it’s my own project, some finishing details like that will just look even better once it’s all comple