TL;DR: Grab the files below and print a Remove-Before-Flight keychain with TPU pitot cover, aircraft wheel chocks, and Cessna 172 trainer models for classrooms and clubs. Clear settings, safety notes, and assembly steps included.

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Why 3D-print for aviation?

Makerspaces and flight schools are bridging theory and practice with fast, low-cost prints. The three projects below are classroom-safe, hangar-friendly, and perfect for libraries, high schools, aero clubs, and pilot ground briefings.

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1) Remove-Before-Flight Keychain + TPU Pitot Cover

What it is: A bright tag plus a soft sleeve that slips onto the pitot tube during storage.
Use case: Hangar or tie-down reminder. Not certified; never fly with any cover installed.

Materials

• Tag: PLA or PETG
• Sleeve: TPU 95A (flex)

Print Settings (suggested)

• Tag: 0.2 mm layers, 3–4 walls, 20–30% gyroid infill
• Sleeve: 0.2–0.24 mm, 3 walls, 30–40% infill, add a brim

Fit Tip

• Many GA pitots are ~9.5 mm OD. Model/scale your sleeve to ≈9.0 mm ID for a snug grip. Test fit on the ground only.

Finish & Assembly

• Add a split ring plus red ribbon/streamer for visibility.
• Optional: emboss “REMOVE BEFORE FLIGHT”.

Download: [RBF Keychain + TPU Pitot Cover — FILES BELOW]

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2) Aircraft Wheel Chocks (Parametric)

What it is: Interlocking wedges with a rope handle; sized for light GA aircraft and training demos.

Materials

• PETG (weather-resistant)
• Optional TPU pads for extra grip

Print Settings (suggested)

• 0.28 mm layers, 5 walls, 40–60% infill, 6–8 top/bottom layers

Assembly

• Knot 6 mm paracord through side holes; print two per wheel.

Sizing

• Default profile fits common 5.00-5 GA tires. Scale length/height proportionally for other sizes.

Safety

• For light use on level surfaces. Not certified; inspect for cracks, don’t rely on in gusty conditions or for heavy turboprops.

Download: [Wheel Chocks — FILES BELOW]

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3) Cessna 172 Trainer Models (Classroom Set)

Two compact builds that make ground school hands-on.

Kit A — Control-Surface Trainer

Includes: Fuselage, tail, wing stubs with moving aileron, elevator, rudder (use short pieces of 1.75 mm filament as hinge pins).
Print: PLA, 0.2 mm layer height, 15–20% infill.
Teach: Primary/secondary effects, trim basics, yaw coupling.

Kit B — Wing Section + Flap/Aileron

Includes: NACA airfoil slice with detachable flap/aileron and desk stand.
Print: PLA, 0.2 mm (optional clear PETG spar for “see-through” demo).
Teach: Lift, camber, angle of attack, flap effect.

Download: [Cessna 172 Trainer Models — FILES BELOW]

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Quick Print Checklist

• Level bed & clean nozzle
• Correct material: TPU (pitot) / PETG (chocks) / PLA (trainers)
• Walls ≥3; infill ≥20% (chocks 40–60%)
• Test fit before field use; inspect regularly

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License & Safety

These models are for education and light ground use. They’re not certified aircraft parts. Use at your own risk and follow your club/airport SOPs. Always remove pitot covers before flight.

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Downloads (place your links)

1. Remove-Before-Flight keychain + TPU pitot cover — [DOWNLOAD LINK]
2. Aircraft wheel chocks (parametric) — [DOWNLOAD LINK]
3. Cessna 172 trainer models (moving controls + wing section) — [DOWNLOAD LINK]