The design
A 1/8 in steel base holds 19 dividers cut from 14 gauge sheet. A 3 in chamfer on each divider opens the front of every slot so items slide in without snagging.
Drawings and welding
I drew the package with a BOM and weld note, then cut the parts and welded each divider with short 2 in welds on each side, which hold it rigid while limiting warping.
