Many metalsmith's may recognize this template from, "The Complete Metalsmith" By Tim McCreight
This template helps the maker divide a circle into equal divisions of 3, 4, 5, 6, 7, 8, and 10.
Tim has graciously agreed to allow Lion Punch Forge to make a physical tool out of the template in his book! If you don't already have a copy of his book check it out HERE.
