The standard fence that came with the saw. That face of the board is jointed and the edge on bottom is jointed to that face. The other two sides don't matter at this point. If you look close you can see a pencil mark X on top of the board. That lets me know that edge is not jointed (not square to the jointed face).
The cut edge is planed next then the final width is cut after it sits a while.
Do you have plans that we can see for building the shadow box? I'm thinking for small shadow boxes (circa 24" x 24") that I would use wood thicknessed to somewhere between 5/16th and 1/2". Yours seems to be 5/4".
I really envy you Mike. With my self diagnosed ADHD I have to see immediate result or I loose interest. The thought of spending a day in the shop sizing and jointing so at the end of the day the wood moved from one pile to another drives me insane.
I spent a year going to a psychologist to find out I have ADHD with a very high IQ and that it’s alright to be that way. You don’t know how many things I have designed, invented, discovered only to forget or be distracted by some other discovery.
That’s probably why I never did real furniture, too many parts and pieces to keep up with. And turning is almost instant gratification so I gravitate to that.