The ash face-frames were all screwed together with the Kreg Foreman Pocket-hole machine. It's a nice system with strong joints. No regrets in those joints for strength speed and accuracy. Way faster than half lap or tenons. I would love to have the Festool domino but I doubt wifey would go for $1000 for machine that drills oval shaped holes. Poor me.
Before mounting they all got primed and painted and top coated to match the doors (see the cabinet doors for more info on the paint used). That was a process... painting all the faces proved to be time consuming and use a lot of paint (over spray). Mounting the face frames were a bit of a hassle. If I were to build more, I would create a jig. The carcass sides that were not exposed got pocket holes ever 10 inches to help set the face frames. That proved to be very helpful as it allowed me to clamp, screw, and move the clamp.