The main mast step is (mostly) ready for epoxy coating as there are some saw marks/burns to be sanded out.
Earlier in the week, I epoxied a piece of 9mm ply to the bottom.
The assembly was trimmed & squared up with the table saw. Using the drill press (with Forstner bit), router and sandpaper I cut the hole in the bottom for the mast foot and cut drain slots with the table saw.
The sharp edges were rounded over using the router.
The mast step will be sanded (a few more times, I am sure) and coated with epoxy.