Well there seems to be as many ways to construct a drawer box (I'll worry about the fronts later) as there are members of this forum. I am trying to KISS since this is my first try. I think I have the dimension issues figured out except depth so I'm really asking about the construction itself. I have watched our buddy Norm make lots of drawers so I think I know what to do but I want to make sure I understand why I'm doing it. I made a box joint jig so I plan to make box joints (I can't afford that fancy dovetail jig Norm uses more recently). However, when I watch Norm, he box joints only the front corners and dado's the back panel. Is that for simplicity, strength, or what? If I use that technique, how much of the side panels should extend beyond the back panel? I've seen some that have very little and others that seem to have quite a bit.
Although these will be fairly large drawers (the opening is 12 3/4 X 21 3/8 and the cabinet is 28 deep), I think 1/2 ply all the way around will still be sufficient. Nothing really heavy will be going into them. If I can find 26" side slides easily I'll use them but I know I can get 24" otherwise. Either way I think that is plenty of room for that type box construction.
Thanks.