I'm adding some purpleheart to slots cut into a miter joint. I ripped the slots on my RAS (I'll post pics of the setup on Boxing Day - it is quite entertaining) and am getting ready to cut the purpleheart inserts. I am looking for input as to the best grain orientation of the purpleheart. The exposed section will be the diagonal to the grain, but I do not know if it is better for the flat part hidden inside the joint to be with grain (this is what I would do left to my own devices for a little extra strength even though the purpleheart is primarily decorative) or if that hidden span should be cross grain.
The project is a jewelry box about 6" by 8" by 3" tall (maybe closer to 5" with top and bottom attached).
I hope my wording is understandable. Happy holidays to everyone!