Finished project
I built this Norm Abram workshop hutch for my brother... with his help.

I built one for myself many years ago. I built the carcass first, then the drawers, and then tried to install the drawers. Nearly impossible to do with only 1/32" tolerance for drawer slides. I think every slide has some shims and the process to get them aligned was horrible.

I tried a different technique this time. We built this thing vertically. With slides mounted to carcass and drawers, we slid drawers onto the end carcass, and then slid the next carcass divider onto the drawers. We repeated this for each section. We put spacers of the exact dimension for the slides between drawers and dividers to keep from compressing the slides. Using this technique, gravity kept the carcass dividers exactly parallel to the drawer sides. The tricky part was keeping everything square and plumb. Temporary masonite bracing stapled to the top and back helped with that. The end result is drawers that work perfectly with not one single shim.