I'm building myself a dartboard cabinet from Walnut. Some of the cabinets I've seen have a decorative groove routed on the inside of the door maybe 2" from the edge that follows the shape of the door. I hope this explanation is clear. How would I go about routing that groove? Would I make a template out of plywood/hardboard and then secure it to my door with double sided tape and use a router template? I'm not sure what I will route yet, possibly a V groove or a Cove shaped groove. I would imagine that commercially available cabinets have this routing done by CNC or some other computer aided technology.