This interlocking heart puzzle symbolizes two individuals perfectly fitting together, representing connection, unity, and mutual love. Designed as a Valentine’s Day keychain or small keepsake, its clean separations and smooth curves make it ideal for precise, high-quality 3D printing.

Best Material

PLA – Perfect for multicolor printing, sharp puzzle edges, and lightweight keychains

Resin – Recommended for a premium, smooth finish with crisp icon details

Layer Height

0.16 mm for PLA on Creality K1C (excellent detail with strong interlocking parts)

0.05 mm for Resin (refined, gift-quality finish)

Supports

No supports required

All shapes, cutouts, and puzzle joints are self-supporting and print cleanly without additional supports.

Orientation

Print flat on the build plate, back side down.

This ensures perfect alignment of the puzzle connection and sharp definition of the silhouette icons.

Scale Suggestions

60 mm → Valentine keychain

90 mm → Romantic bag charm or gift accessory

130 mm → Decorative love keepsake

Perfect Match Puzzle Heart – Noah0x03

0.24mm layer, 2 walls, 15% infill