In a recent thread there was some good information on learning to engrave. I am working on a rifle and would like to fit it with an engraved patch box. One of the points made is that the graver must be very sharp and also correctly sharpened. A couple of the replies indicated that the Lindsey templates work very well. Since entry level engraving is done mostly with the square graver, which of the templates that he sells work for doing the face and heels of a square graver? The short sharpening video on-line showing a template in use looks like it would really help someone like me. Thanks