In case you were interested in the process here is a picture of my bench, with work in progress.
I usually do this kind of work as demonstrations on living history displays so the bench is a bit different but the tools are essentially the same.
Most of the work is done with three small chisels, each half
the length of the next one. The hammer on the right applies a gentle tap and you move the chisel along the line.
Simple but requires careful attention.