Hi everyone, this is a great place. Does anyone know the right way to calculate what size stepper motor I need. I am putting my list together for my 4x8 router together but want to verify the size of the stepper motors. the gantry will be 5' wide, running on 35mm thk rails for the distance of 8'. It will be a u shaped table so the 2 x 6 gantry should be surdy. It will be rack & pinion with a 3:1 ruduction/ spring loaded. I'm looking at the rs34-1840 but don't want to be to big. thanks for any help.