That was our original intention, but in order to get a groove to insert the ring spring, you have to use a boring bar. The problem is, with the hex shape, you will be constantly cutting/not cutting/cutting/not cutting until you reach the full depth, and this impact loading on the cutting tool will cause it to shatter. I think we're going to try really hard and pursue the magnifying glass idea, and take every precaution to make it scratch resistant and useful.-Dough