I know everyone loves pocket screws for face frames, but a glued miter on a big pantry unit failed on me last Thursday.
It was a 7 foot tall pantry for a kitchen remodel. The client wanted a clean look, no visible joinery. I went with a glued miter on the face frame, reinforced with biscuits. Clamped it up, let it sit overnight. Two days after install, I got a call. A 3 inch section of the miter had opened up at the top right corner. The seasonal humidity shift in the house must have been worse than I figured. Had to go back, inject glue, and add two discreet figure-8 fasteners from the inside that the client thankfully can't see. In my experience, sometimes the 'prettier' joint just isn't as tough as a good old mortise and tenon or even a pocket screw joint you can hide later. Has anyone else had a miter fail like that on painted work? What's your go-to for invisible but strong face frame corners?