I learned to engrave in England, mostly for stone setting. The
benches we used were the more typical european style with the deep
"C" shaped cutout.
The reason it matters is that you can use the sides of the deep
cutout to brace yourself against. Assuming right handed, your left
shoulder goes against the left side of the cutout, while your right
elbow goes up on the tabletop. The idea being to brace against the
left, and use the right to support your arm. All those big muscles in
the shoulder are intended for throwing rocks at dinner, not fine
engraving, so it’s best to get them out of the equation by way of
resting the right arm on the tabletop. So all the control moves are
coming from the right wrist, and the turns are coming from the left
I’ve got a ‘how to make a frankenbench’ thing on my website that
shows the style I’m talking about.
The link is here:
Hope this helps,