How about this for storage/shelving?
The upright with the casters is 46" tall and 30" deep. I have 6' beams for it to hold the 5-1/2' "parts sorting tray". It, however, is 20-1/2" wide(deep?). The pallet rack lip is 1/2". So, 2X4's will be used to support the tray and there are 4 holes where screws can be inserted to hold it to the lumber. The back 9 or so inches could have shelves built to hold all the cans and jars of (as)sorted goodies. The casters are rated for 550 lbs. each so I don't see that being a problem. It may get a little top heavy though if I want to wheel it around. Maybe a shelf on the bottom with the kitty litter buckets full of hardware that is not sorted. Winter project IF I get some room made to set it up and play.
The upright with the casters is 46" tall and 30" deep. I have 6' beams for it to hold the 5-1/2' "parts sorting tray". It, however, is 20-1/2" wide(deep?). The pallet rack lip is 1/2". So, 2X4's will be used to support the tray and there are 4 holes where screws can be inserted to hold it to the lumber. The back 9 or so inches could have shelves built to hold all the cans and jars of (as)sorted goodies. The casters are rated for 550 lbs. each so I don't see that being a problem. It may get a little top heavy though if I want to wheel it around. Maybe a shelf on the bottom with the kitty litter buckets full of hardware that is not sorted. Winter project IF I get some room made to set it up and play.