I mostly finished mine today. Like most projects, there is always something to change or add. My plate is 3/4" aluminum, 6" x 8.5", tapped 1/4-20 holes 1.25" OC and 0.2505" reamed holes, also 1.25" OC, offset from the other holes. The large roll is 2.725" in diameter. I also added an additional adjustment roll. It is movable in 1.25" increments.