One trick that inlayers use on guitars (and that I use on the boats) is to work off photocopies of the design. You need a design with very thin lines. The line-width will be the width of the saw kerf so everything fits easily together. One paper copy is lightly spray-glued to the item being inlaid and covered with a release (wax paper works great). Other copies are then used to cut out the individual pieces. Once cut out they're superglued in position to the wax paper and to each other. Super-glue sticks just enough to the wax paper to hold the pieces in place. I was doing exactly that in the picture in my previous post. When complete you remove the wax paper holding the inlay from the surface to be inlaid and set it aside. Now you can route out the recess by routing directly on the paper copy that was spray-glued to the surface. I use a Dremel with a precise metal router base and small carbide spiral bits. I trace the outline of the inlay with my smallest bit (