I wanted to see what the largest diameter circle I could get from an irregular shaped small piece of wood. There are templates available for finding the center of log sections and locating the center point, but I was working with small stock. I made this center finder/drawing aid at the TechShop, www.techshop.ws.
I started by placing a .07 inch diameter circle in the center of a 1 inch diameter circle and then constructed concentric circles spaced at 1/8” increments. I used Corel Draw as that is the “resident” program for the Epilog lasers. I made the .07 inch circle "hairline width" and the larger circles .014 inches line width for etching.