Biplane Model - Propellers Rotate Interactively, Mini Printable, No AMS Required

Other Fun Toys (Click image to jump to link)

Update Log

(Tip: Please try to avoid using high-friction, low-strength filament such as matte, wood, or LITE to print gears and shafts, as this may lead to jamming and fragility)

(Tip: Prints may have flashing and burrs, after installation, apply some pressure to the rear wheel, slide it back and forth several times, and allow the parts to polish each other, then it will be smooth)

• 【December 28, 2025】Update: Completely solved potential transmission jamming issues during assembly (PLA Basic), if you encounter new problems, please private message me (installation diagrams and instructions are at the bottom)

• 【December 27, 2025】Update: Kit card version, increasing assembly fun, convenient for gifting or boxing. [Tip: For installation, be sure to trim clean the flashing and burrs where the parts connect to the frame, especially the central drive shaft must be trimmed and polished clean! Sprue cutters are needed]

• 

• 【December 26, 2025】Update: Based on feedback, the following parts have been optimized: 1. Front wheel axle and bracket strengthened, more robust; 2. New front wheel shape, easier to assemble; 3. Added fuselage mounting positioning parts (at the tail); 4. Rear wheel axle adjusted to be integrated, easier to assemble; 5. Middle axle tolerance recalibrated. After optimization, rotational smoothness is further improved, tests have shown that linkage effect can be achieved on very smooth surfaces such as glass, and the entire assembly, except for the "M letter" which requires glue, can be assembled without glue, but I still recommend reinforcing all connection points with glue for more reliable strength and durability. [Tip: Prints may have small burrs, after installation, apply some pressure to the rear wheel with your hand, slide it back and forth several times to allow the parts to polish each other, then it will be smoother] (Tested based on Bambu Lab PLA Basic filament, different brands of filament may have slight differences in shrinkage tolerance, so the effect may vary)

   

• 【December 05, 2025】Update: Optimized fuselage axle groove tolerance, smoother rotation (Tested based on Bambu Lab PLA Basic filament, different brands of filament may have slight differences in shrinkage tolerance, so the effect may vary). Note: The upper and lower fuselage must be aligned when gluing, the nose ring component can assist with alignment

   

• 【December 04, 2025】Update: Optimized rear gear tolerance, easier to rotate

   

• 【June 02, 2025】Update: 1. Front wheel tolerance has been recalibrated, easier to install. 2. Gear components and some details optimized, smoother operation. It is recommended to apply a small amount of glue to the outer end of the axle after installation for reinforcement (be careful not to glue the rear wheel and gears), to prevent loosening or falling off during play. Please refer to the installation instructions and diagrams below before assembly to avoid errors, thank you for your support!

• Newbie Must Read: This model has been verified by the author through multiple printings, there are no printing issues. Some parts of this model are small, if you are unsure or not very familiar with 3D printing, please first spend a few minutes printing the print profile - adhesion test, which should normally look like the photo in the profile, with every corner adhering properly. If your print fails with spaghetti, it indicates a problem with your build plate or filament. Please clean or replace your build plate, or apply glue, please dry or replace your filament. Friends with issues are welcome to private message me or leave a comment.

Model Introduction: This is a beautiful classic biplane with a propeller. The wheels and propeller can be linked, and when it glides on a desktop, the propeller will also rotate, mimicking the appearance of an airplane accelerating for takeoff. It is also a very beautiful decorative piece. The propeller rotates too fast for the dynamic image in the picture to be clear, but the video can show it

Installation and Model Instructions:

Installation of small holes cannot guarantee that all filament and 3D printers can print with the same tolerances as the author's configuration. When you encounter a loose hole fit, you can use glue to secure it. When you encounter a tight hole fit that is difficult to insert, please use a knife to trim the edges or tweezers to enlarge the hole, or gently heat it with a lighter for easier insertion. During installation, please note that the gear installation position should be in the right slot, and the central drive shaft should be oriented with the larger end facing down. The M logo and the upper and lower halves of the fuselage are recommended to be glued together, using the nose end ring part and the tail triangular part for positioning. All plug-in and combined fixing parts can be reinforced with glue to prevent loosening after prolonged play. [Tip: After installation, parts may have some small burrs. When first using, you can apply some pressure to the rear wheel with your hand, rotate it vigorously, and allow the parts to polish each other, and it will become smooth] Installation diagrams are as follows: