Hi.
Weclcome to the LB forum @thiggins .
That will be tricky to pull off with hobby equipment.
Not to mention with a 2.5D controlling software.
If Your One Finity CNC supports 3D engraving, IMO the easiest way to tackle this task would be to use some other software when engraving/marking curved objects.
Lightburn is truly a great software with a great team behind it, but there are lots of things it’s not capable of doing…yet 
.
In addition to those search hits @ednisley posted:
Not individual staves, but marking whole barrels was discussed in this:
thread.
As can be expected, that thread was derailed more than once, but there might be some nuggets of information that could be useful in Your case.
Regards,
Sam
