How To Build A Router Table Fence
Cut the board in half to make a base and rail on a plank of MDF.
How to build a router table fence. Then flip the tool over aligning the base of the mark with the same edge of the square. Just clamp it in place or drill holes or cut slots through the base to match your tables current fence-bolt spacing. Slots using a straight board clamped to the router table as a temporary fence.
Create clearance for the bits in the fence base by drilling a 3-12-in. Rout the 14-in. The cutouts come together to form an opening for the router bit.
The fence base and rail will be made from a piece of MDF. Four clamp blocks are cut from red oak. Mark the location of each brace in pencil on the back of the fence then bore holes for screws that secure the support braces.
Since the spacers are longer than the auxiliary fence mark your pieces based on a centerline. This plan fits a standard 3-12 diameter router. Draw a line along the edge of the long side of the square.
There are 2 piece adjustable fences or just the simple one piece that is also a zero clearance fence. With the fence in position I made a mark in line with the tracks so I could drill the holes. Measure the center-to-center dimension between the two bolts on the main fence and transfer that to the auxiliary fence and the spacers.
Hole in the center of an 8 x 36-in. Cut your fence parts carefully and check them with a square. Use the factory edge of a piece of plywood or an edge that you know is perfectly straight to align the short side of your square.