Introduction
3D printing has revolutionized the FPV hobby. What used to require expensive CNC machining or injection molding can now be produced on a desktop printer for pennies. From durable TPU GoPro mounts to experimental frame designs in carbon fiber reinforced filament, the possibilities are expanding every year. This guide covers everything you need to know about 3D printing FPV drone parts — which materials to use, which parts are worth printing, design resources, and practical printing tips.
Material Selection: TPU vs PLA vs PETG vs PA-CF
TPU (Thermoplastic Polyurethane) — The FPV Essential
TPU is the most important filament for FPV pilots. Its flexibility allows it to absorb impacts and vibration, making it the ideal material for camera mounts, antenna holders, landing pads, and arm guards. TPU ranges from Shore 85A (very soft, like a rubber band) to Shore 95A (firm but still flexible). For most FPV parts, Shore 95A is the sweet spot — stiff enough to hold a GoPro securely but flexible enough to survive crashes.
Best uses: GoPro mounts, antenna tubes, landing skids, arm guards, receiver covers, battery pads, gimbal protectors.
Printing tips: Print slowly (20-30 mm/s), disable retraction or set it very low (1-2 mm), use a direct drive extruder if possible, and set bed temperature to 40-50°C. TPU absorbs moisture aggressively — always dry it at 55°C for 4-6 hours before printing.
PLA / PLA+ — For Prototyping Only
PLA is easy to print and dimensionally accurate, but it is brittle and has very low heat resistance. A PLA camera mount left in a hot car will deform, and a PLA arm guard will shatter on the first hard landing. Use PLA only for rapid prototyping, mockups, and non-critical parts like wall mounts and display stands.
PETG — The Budget Middle Ground
PETG bridges the gap between PLA and advanced engineering filaments. It is tougher than PLA, more heat-resistant, and easier to print than TPU or nylon. For structural parts that don’t need the extreme durability of TPU — such as frame spacers, stack mounts, and ducted whoop frames — PETG is a solid choice at a low cost.
PA-CF (Carbon Fiber Reinforced Nylon) — Structural Grade
PA-CF is the closest you can get to a CNC-cut carbon fiber frame on a desktop 3D printer. The carbon fiber reinforcement dramatically increases stiffness and reduces warping compared to pure nylon. PA-CF parts are strong enough for frame arms on smaller quads (3-4 inch) and structural mounts on larger builds. However, it requires a hardened steel nozzle (0.4mm minimum, 0.6mm recommended), an all-metal hotend capable of 280-300°C, a heated enclosure at 50-60°C, and thorough filament drying at 90°C for 8-12 hours. This is an advanced material — don’t attempt it as your first print.
| Material | Flexibility | Durability | Heat Resistance | Ease of Printing | Cost per kg |
|---|---|---|---|---|---|
| TPU 95A | High | Excellent (impact) | ~90°C | Moderate | $25-35 |
| PLA+ | None | Poor (brittle) | ~55°C | Very Easy | $18-25 |
| PETG | Low | Good | ~80°C | Easy | $20-30 |
| PA-CF | Low | Excellent | ~150°C | Difficult | $55-80 |
What FPV Parts Should You 3D Print?
Must-Print Parts (High Value)
- GoPro / Action Camera Mounts: The #1 most printed FPV part. A well-designed TPU mount with a 30° upward tilt angle can save you $40-50 compared to a CNC aluminum mount, and when you crash, the TPU flexes instead of snapping your GoPro mount tabs.
- Antenna Mounts and Tubes: TPU antenna holders protect your expensive VTX and receiver antennas. A printed tube with a 90-degree bend routes your antenna at the optimal angle.
- Landing Skids and Arm Protectors: These wear items protect your frame and motors during landings and minor crashes. Print them in TPU and replace them for pennies when they wear out.
- Receiver and VTX Covers: A thin TPU cover protects exposed electronics from dirt, moisture, and prop strikes.
Experimental Parts (Medium Value)
- Ducted Whoop Frames: PETG or PA-CF whoop frames with integrated ducts are popular for 65mm and 75mm builds where the ducts are part of the frame. Performance is close to injection-molded frames at a fraction of the cost.
- GPS and Compass Mounts: Keeping your GPS away from the carbon fiber frame improves reception. A tall TPU mast with vibration damping is an excellent print.
- Stack Spacers and Vibration Dampers: Customizing your stack height with printed spacers lets you fit components that would otherwise collide.
Avoid Printing (Low Value / High Risk)
- 5-inch+ Frame Arms: Even PA-CF cannot match the stiffness-to-weight ratio of prepreg carbon fiber. Printed arms will flex under load, causing oscillations and reduced control. Stick with CNC-cut carbon fiber for arms on anything 4-inch and above.
- Propellers: Printed props have severe layer adhesion issues at high RPM. A prop disintegrating at 30,000 RPM is extremely dangerous. Buy injection-molded props — they are cheap and precisely balanced.
Recommended Designs and Resources
The FPV community shares thousands of 3D printable designs for free. Here are the best places to find them:
- Thingiverse: Search for “FPV GoPro mount”, “TPU antenna holder”, or specific frame names. The FPV category is massive. Look for designs with high download counts and positive comments.
- Printables.com: Growing FPV section with better search and quality filtering than Thingiverse. Many designers post here first.
- Thangs: 3D model search engine that indexes Thingiverse, Printables, MyMiniFactory, and more. Great for finding obscure parts.
- GitHub: Many open-source frame designers publish STEP and STL files alongside their frame designs.
Printing Tips for Functional FPV Parts
- Wall count over infill: For TPU parts, 3-4 walls provide far more strength than high infill percentages. Most GoPro mounts print perfectly with 4 walls and 15-20% gyroid infill.
- Layer adhesion is everything: Print TPU and PETG at the high end of their temperature range for maximum layer bonding. A part that delaminates on the first crash is useless.
- Orientation matters: Think about stress direction. A GoPro mount should have layers running perpendicular to the forces of a crash. Use your slicer’s preview to visualize load paths.
- Dry your filament: Wet TPU prints with bubbles and stringing. Wet PA-CF won’t print at all. A $40 filament dryer is the best investment you can make for functional prints.
- Test before trusting: Print a test part, mount your camera, and drop it from waist height onto concrete. If it survives, fly it. If it breaks, adjust your print settings and try again. Never fly a $400 GoPro on an untested mount.
Conclusion
Every FPV pilot should own a 3D printer — or at least know someone who does. The ability to replace a broken GoPro mount in two hours for $1.50 instead of ordering a $25 CNC replacement is the difference between flying tomorrow and waiting two weeks for shipping. Start with TPU and a well-reviewed mount design from Thingiverse. Once you are comfortable, branch out into PETG functional parts and eventually PA-CF when you are ready for structural components. The printer pays for itself within a season of hard flying.