I am tring to build a shadow box frame for my grand doughter and can't seem to be able to hold the boards to get a good joint. The reason that i'm trying to use the LOCK MITER bit is because she wants to put things that are heavy enough to require STRONG joints. Does anyone know of a jig that I can build to hold the wood firm enough to get a good joint? Any and all advice is welcome. Thanks in advance. Gerald.