My first router table, over 30 years ago now, was a piece of plywood with a top layer of 1/4" tempered Masonite. The bottom of the plywood had a recess cut into it for the router base, done so I wouldn't lose too much cut depth. The fence was a squared up piece of 2 x 4 with a semi-circular cutout in the center to provide clearance for the bit. When I needed a fence for jointing, I made a second fence identical to that except I glued a piece of vertical grade laminate (.020" thick) to the outfeed fence. To be honest, it was much easier, and quicker, than the 2-piece fence I have now where you have to loosen the bolts and shim behind the facing. Sometimes simpler is better.