I am trying to build a paddle to create waves in a water tank. I have built a linear drive with ballscrew and plastic nut, stainless steel bearing driven with a hybrid stepper and HSS86 leadshine type drive. Currently the max I can drive the motor is approx 4000 rpm with a UC300eth and bob. My original idea was to drive the one axis from the bob, using a circular G2 command sending the other axis not connected through the bob. I could maybe use a formula or vb code but not that savvy on these commands. Basically want to oscillate the axis or table around a zero position and have feedrate control and be able to cycle this in the smoothest possible manner for different radius. Any suggestions for the best method?