After an initial test on the walnut to establish the surface finish I wanted on the walnut, we build a large jig for the walnut to fit into to ensure it was stuck now to the bed properly.
I then wrote the toolpath for the walnut with the following settings-
Below is a short video of the process.
The outcome is really nice, I am really pleased with how the form looks in walnut.
Whilst the surface finish is fairly good, I still have quite a lot of finishing work to do as the tool did feather up the wood a bit.