Modular 3×3 Stacking Puzzle

This is a modern 3D-printed reinterpretation of a classic wooden stacking toy. The goal is simple but surprisingly challenging: combine different geometric shapes to build a complete 3×3 tower on the peg base. Each piece has 2–4 holes and must be arranged so all 9 pegs are filled evenly across layers. The different shapes encourage spatial reasoning, logic, and creative problem solving — perfect for kids and satisfying for adults. The soft colors give it a clean, Scandinavian-style look, but you can print it in any color combination you like. Recommended Print Quantity (One Complete Set) To build a full 3×3 tower (9 pegs total), I recommend printing: 1× Peg Base (3×3 layout) 2× L-Shape (4 holes) 4× L-Shape (3 holes) 4× Short Line (2 holes) 3× Long Line (3 holes) 1× Square 1x T-Shape This combination allows multiple stacking solutions and balanced builds. 220 g of filament used in this configuration. Printing Tips Layer height: 0.2 mm works great Infill: 5% is sufficient (Use 15% for th