Woodworker's Journal fall-2009, страница 9
A If you have a router table big enough for this project, that would be the ideal solution. Barring that, the next best answer is a straightedge jig like the one I built for the June 2000 issue of the Journal (see illustration above).
A router's baseplate rides against the edge of this jig to ensure a perfectly straight cut. A hardwood template marks the bit's path
The heart of the jig is a very straight, jointed plywood fence, which is sealed along its two ripped edges with strips of solid hardwood banding. A groove is then plowed in the top, to house an aluminum T-slot track.
Your router runs along
the fence of the jig, and that guides a straight bit along a hardboard template attached to the bottom of the fence.
If you want to customize your jig, you can index the end off your first groove to your 3" spacing. Sandwich the gate on the board, and put a marker to use for indexing off a slot. Then continue down the gate, routing in all your V-grooves.
— Rick White