Heart Valve Model
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PLA heart + TPU valves for class. Cut valves apart after print, insert, use beads to show one-way blood flow.
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Chemistry & Biology
- Licencja
- Creative Commons — Attribution — Noncommercial — Share Alike
This 3D printable heart model is designed for hands-on biology lessons about heart valves and blood flow.
🧩 What it is
A rigid heart body (PLA) with slots/openings at the bottom
A set of flexible heart valves (TPU) that can be inserted into the model
Small beads/balls can represent “blood” and make the one-way valve function visible
🖨 Two-material print
PLA (white parts): the main heart body – stable and classroom-proof
TPU (blue parts): valve elements – soft, flexible, and functional
Important: The valve pieces are printed connected for better bed adhesion and print stability. After printing, separate the valves using scissors or a craft knife.
🧪 Classroom use
Great for:
student stations / lab-style activities
small group experiments
quick demonstrations of valve mechanics
discussions about circulation, pressure, and backflow prevention
Students can test different “flow” directions using beads and directly observe when the valves open or close.
✅ Tips
Use small smooth beads/balls (e.g., plastic pearls or airsoft BBs) for the “blood flow”.
TPU prints best with slower speeds and good first-layer adhesion.
Carefully trim the connecting bridges after printing so the valves stay clean and flexible.