Just an idea for making some shelves. One bracket to fix to the wall, another to support the front rail. Spice rack made from some old timber.

Screw holes are OK for 3.5mm woodscrews, these are actually 4mm, which are a bit too big. Screw in the front needs to be 3.0x16mm, or similar.

Bracket6 should be printed with the small face upwards. It really needs editing a bit to reduce the overhang, didn't notice till I out the marker coutouts in the sides.