This simple router-table microadjuster takes only a few minutes to make, and pays huge dividends in accuracy. It consists of a rabbeted backstop that hooks over the rear of the router table and locks into the same T-track that the fence rides in. The backstop houses 6-32 pronged T-nuts with through holes to hold 6-32 threaded rods. I added a jam nut and coupler to act as a handle for each rod and a reference to indicate the adjustment amount. Each full turn of the coupler nudges the fence 1⁄32 ".
—Richard Lacey, Rome, Pa.