I know you said stop giving ideas but here is one of my custom tips, no charge. This only applies if the flutes will terminate before the end of the material rather than running of the end and butting into a plinth or head block.
I use a frame and use spacers to cut the flutes. The really cool feature is to use a radius ended bit core box (or cove I think) and ramp out at the end of the flutes. So at the end of the frame you have a ramp so the bit lifts out of the material over about 1/2" so instead of a radiused end to the flute you get a sort of a point. Woodworkers will scratch their head and customers will never notice. But this is what it would look like if you did it by hand with gouges, etc.