I put a sash cramp in my vice, then cramp the sole of the plane in the sash cramp, placing the body on the sole and mark out the dovetails using a scribe.
The sole is marked and ready for cutting.
Put the sole in the vice so that the saw cuts are vertical.
To remove the waste, I do vertical cuts with the sole horizontal and knock out with a blunt chisel, left and right to bend the waste.
Filing everything level to the lines.
The sole is finished.