The Challenge
After a year of building several RC planes—from scratch-built experimental models to modified gliders—I faced a persistent problem: durability and reliability. Seeking a more precise and repeatable construction method, I delved into the world of 3D-printed aeronautics. The goal was clear: build the best plane I’ve ever owned and, more importantly, bring it back home in one piece.
The first of 60 parts being printed on a modified Ender 3.
Manufacturing Process
Without prior experience in printed planes, I chose a model from Eclipson and began a non-stop printing marathon. The fuselage was printed using high-resistance PLA from Sakata 3D, ensuring structural integrity for the main body.
For the wings, weight was the priority. I opted for Lightweight PLA, which allowed me to save 50% of the weight compared to standard filament. To counteract lift forces, the wings were reinforced with three mandatory carbon fiber tubes, preventing upward bending during high-stress maneuvers.
Integration & Electronics
The assembly followed a rigorous PDF protocol, using specialized glues and steel reinforcements. A critical addition was the custom landing gear, essential for ensuring safe returns. This five-channel aircraft (elevator, ailerons, motor, rudder, and flaps) required a total of six servos.
"Engineering is about solving unexpected problems. When my recycled radio couldn't synchronize the flaps, an Arduino-based signal inverter saved the mission."
One of the main technical hurdles was the flaps' synchronization. Due to my hardware limitations, I designed an Arduino-based solution to read the receiver signal and invert it for the corresponding servo, restoring full flap functionality.
Custom electronics bay and Arduino signal processing unit.
Flight Results
Christened as "Sally", the aircraft underwent a strict pre-flight checklist at the local airfield. The maiden flight was a success. The plane demonstrated exceptional stability and "floated" through the air, capturing high-altitude footage through stripped-down action cameras integrated into the fuselage.
This project proves that with precision manufacturing and creative problem-solving, high-end aeronautics are accessible to the maker community.
Sally's maiden flight.