Using plywood or particleboard, make a skid for the legs, elevating them on one end with a wood strip to control the amount of taper. (This is the red strip in the photo.) Screw cleats on the skid to hold the legs while they go through the planer.
Taper one side, taking 1/16 in. per pass, then rotate each leg one turn and taper the next side. Add a second strip (shown in blue) and taper the remaining two sides. Note: Stop the taper 2 in. from the end when planing the last two sides so you’ll have ﬂat areas for attaching apron boards.
Our thanks to reader Robert Brundage for this slick, timesaving tip.