OK, so I've started to tinker with stuff, and I'll try and post a bit of progress on here.
- I modeled a groove in Fusion 360
- export as STL
- over to Blender to render a height map
- import to Illustrator to convert to vectors and save as SVG
- import to Easel
I didn't account for the thickness of the piece of scrap wood that I carved it in, so the percentages got sifted and the groove is slightly too deep, but it turned out pretty good for a test.
The wood is Rimu (a native New Zealand tree) and it has similar cutting properties as walnut.
Slowing it all down to conservative numbers I used a .125" Ball End Mill at .024" depth per pass and 30 IPM with an RPM of 12000