8/20 Saturday - I can work for a couple hours because it's the weekend.
First I cut the corner of each work piece off on the table saw. That's easy enough.
Then I use a saber saw to cut about an eight of an inch away from the line. Saber saws suck. They struggle through thick maple, and the blade kept pulling out so I would have to put it in again. If I tighten it too much to keep it from falling out, then I will break the brittle metal. So I cut for 30 seconds at a time and then replace the blade that fell out. The cut is crap.
I say fuck it when it comes to cutting the arc on the bottom of these parts. It's just there for aesthetic reasons, and I cut a notch instead to do the same thing.