Instead of installing upper cabinets you could simply run a long shelf across the tops of the upright cabinets.
Build a storage cabinet with doors.
Standard base cabinets measure 34 1 2 high for a 36 high work surface with a 1 1 2 countertop.
While still on the ground attach the doors with four hinges each using a self centering bit.
The 1x2 in the front should form a lip to prevent things from sliding off easily.
Measure how tall you need the bottom shelf and mark for reference.
Build the upper cabinets with the same techniques and materials used for the uprights.
The upper cabinets provide deep enclosed storage space and tie the upright cabinets together so they can t twist away from the wall.
I needed to organize my garage so i build some large storage cabinet with doors.
Make four or more or less shelves to add to the unit.
At 24 deep standard base cabinets allow you to bend over and reach in to retrieve anything at the back.
I show you how i built a large storage cabinet with doors for my garage.
Make cabinets as wide as you like but remember that the wider the doors the greater the tendency to rack and warp.
The simple two door cabinet has been around for centuries but it s still one of the most elegant ways to store your stuff.
Make them the same as the base see previous section and image 5 above but swap out the 2x2 s for 1x2 s.