Hes doing it at the same time. I build all my drawers like that.
Bugs, if you step up to a 6mm domino the cutter has more of a shoulder the 5mm bit flares at the end and you have to be careful you dont push to far. Looks like you got a little heavy handed on that first one. Its a delicate balance with the df500. Since the 500 has a max 28mm depth. When I do 18mm I put a rabbit on the drawer sides this will get you more domino depth into the front and back of the drawer. With 15mm you are almost getting 50/50 so you probably dont need to. Another tip is to pin the corners together with 23ga. pin nails with some T3 just make sure the pins arnt where the dominos will go. I pin everything and let the glue set up then come back pop in the dominos add some more glue in the dom hole tap in the domino and once the glue dries rout them flush. easy peasy.
It was still allowing me to push in so I figured it wasn't all the way in ... it seems the full 28mm depth will get into the shoulder area of that 5mm cutter.
I just tried your method and it worked fairly well ... I've slight marring as it allows the bit just a hair to close but I bet sanding would remove it. Maybe I'll try a piece of paper under the router in the future to further reduce this ...
I was just thinking about what you said and since every domino will be flush cut differently, I definitely don't want to do the rest of the drawer just to remove, dado, glue up, and try to find which Domino fits where and in what orientation! Thanks for pointing this out!
So, I'll cut the dado's, sand the pieces smooth, glue the drawer box together, clamp or pin nail between where the Domino's will be, allow it to dry (how many hours?), plunge the Domino holes, glue in the Domino's, let them dry (how many hours?) flush cut them, and sand over the Domino's to finish?
I'm not sure I actually have a round over bit so maybe I'll break the corners gently but wonder whether they'd look better by rounding over or having different height for sides and front/back?