I used a bull nose router bit on my router table to mill both edges of both boards and then I would cut the round portion off of the boards at the TS. I allowed the 1/2 round molding to fall off on the waste side of the blade so I had to precisely adjust the rip fence 3/8" to cut the opposite edge of each board.
So any way, here is what the profile looks like
And the results. I ended up with two 1/2" wide sticks after milling the 1x10 boards and about 50% more moldings than I sould need. Should I make a tambour top now? LOL