Yuhua Sword
Segmented, interlocking design; feather-light and graceful. Weighing just 21 grams, it pays homage to the iconic sword‑light of childhood cartoons.
The Yuhua Sword is a 3D‑printed model sword featuring a modular, segmented construction. The entire sword consists of six independent parts—handle, handguard, three-section blade, and tip—joined sequentially via standardized square pins, with glue used for extra reinforcement. Its weight is kept at approximately 21 grams, symbolizing “the weight of the soul” and evoking the pure memories of childhood.

🚀 Key Highlights
Modular Interlocking Design: Six separate components connected by hexagonal pins with a 15° self‑locking twist—no glue required, quick disassembly and reassembly.

Ultra‑Lightweight at 21 Grams: The entire sword weighs around 21 g, making it virtually weightless to carry and safe for children to handle.

Rooted in Childhood Animation: Inspired by the classic cartoon “Rainbow Stone,” the blade’s texture and color scheme can be customized in either Raindrop‑stone hues or a traditional ink‑wash style.

Support‑Free Printing: All segments are designed to stand upright or lie flat, minimizing the need for supports.

Interchangeable Extensions: Additional modules such as sword tips or tassels can be printed separately, all compatible with the same interface.

🛠️ Printing Notes
Project Recommendations
Material Type: PLA or PLA+ is sufficient; for semi‑transparent effects, consider transparent PETG or glow‑in‑the‑dark filaments.
Layer Height: 0.2 mm.
Filling Rate: Use 0% honeycomb infill for each blade segment (retaining only two wall layers), while the handle and handguard receive 15% infill.
Supports: Support is needed only for the hollow interior of the handguard; no supports are required when printing the blade with its hexagonal grooves facing upward.
Print Orientation: All segments should be printed vertically along the Z‑axis (longer blade sections may be tilted at 45° to reduce height).
Post‑Processing: Gently remove any burrs from the pin ends; if the joints feel too tight, lightly sand the hexagonal faces with fine-grit sandpaper.
⚠️ Note: The stated weight of 21 grams is based on PLA+ material at the default scaling ratio (total sword length 280 mm). Actual weight may vary slightly depending on filament density and infill percentage (±2 g). For precise 21-gram results, adjust scaling or wall thickness accordingly.

🧩 Assembly Instructions
Printing & Cleaning: Remove all supports and inspect the hexagonal pins for any stringing.

Identify the Parts: Components include the tip (thinnest section), Blade Section 1, Blade Section 2 (thickest section), handguard, and handle.

Connecting the Blades: Align the pin on Blade Section 1 with the groove on Blade Section 2, gently push until fully seated, then attach the tip in sequence.

Installing the Handguard: Slip the handguard’s central hole over the base of Blade Section 3’s pin, then insert the handle.

Testing: Hold the handle and gently shake—the segments should remain firmly locked. To disassemble, simply rotate counter‑clockwise by 15° to release the connection.

Optional Touches: Use a permanent marker to draw raindrop‑stone patterns on the blade surface, or apply water‑based decals to recreate the animated shimmer effect.

💡 Tip: If a joint feels loose and won’t lock, apply a thin coat of clear nail polish to the pin surface, let it dry, then re‑insert.