If anyone cares, it doesn't work; at least not when both sides are the same
thickness. The 7/16" is not thick enough to cut the pins. Oh well. It
"might" work with the narrower template, and it might work with 8 degree
dovetails, but I don't have either of those.

It is however rather pretty, with the half round contour, when unequal
thicknesses are used.