Heavy-duty Helicopter 2.1 (Articulated, no supports, no hardware)

This is a heavy-duty helicopter with two articulated propellers, requiring no hardware and no supports. It's easy to assemble, and printing with PETG is recommended for good flexibility, making the buckles less prone to breakage!!

2026.4.12 Update: The description has been updated simultaneously!! (Previous updates have been removed to keep the description concise)

1.The large propeller buckles are printed separately to make them less prone to breakage. The drawback is that they are a bit harder to install!!

2.Adjusted the buckles of the wings, tail wings, 2 propellers, and 2 landing gears to make them more secure and easier to install!!

3.Added a 1.5x larger size!!

The GIF below is an installation preview. Please note the order:

1. Install other parts first

2. Finally install the 2 propellers to avoid breaking them!!! (If the large propeller isn't smooth, rock the buckle; it might be due to the bottom being squeezed, causing the top to widen)

Note: 1. Both PLA and PETG can be printed. It's best to understand the characteristics of these two materials before printing to avoid printing failures!! For example, PLA can become brittle if left for a long time or at low temperatures, while PETG has good toughness. Please choose the filament that suits you!!

        2. If it's for younger children, and the parts are small and easy to disassemble, it's better to glue them firmly with 502 or other adhesives to prevent them from being swallowed!!

        3. If there are no special requirements, please do not use your own advanced process settings for printing~ to avoid printing failures!!

If your printd part has local spaghetti, or the filament doesn't stick to the build plate, please recall if you touched that area (hands secrete sweat and oil, touching it has a very high chance of causing spaghetti)  or if the build plate is dirty. The solution is to search online for how to clean a 3D print plate!! If other problems occur, please describe it in the comments section and add pictures, so it's easier for us to solve it~  Otherwise, I can't imagine the situation = =!!