This is a shelf for miniature paint bottles that are about 25 or 33 mm in diameter. It was made with Valejo and Citadel paint in mind. The shelf is 239mm wide, 92mm tall and 160mm deep (9.4 x 3.6 x 6.3 in) and can fit 9 small or 6 large bottles per row. The shelves can be stacked with the provided standoffs for more compact storage when not in use.

Here's a link to the Tinkercad project

Instructions

To assemble, print two "middle" and "side" parts, as well as one "top" and "bottom". Feel free to mix and match different middles and tops. The parts are a perfect friction fit and don't need any glue or screws.
Printing took me about 3 hours and roughly 220g of PLA filament for one shelf.

Slicer Settings

• Layer height: 0.28mm, for faster print time

• Top and bottom shell layers: 2, for faster print time and less filament

  • Technically, the "side" parts don't need any top/bottom shell layers

• Infill: 30% triangular, for rigidity and print speed

• No supports