Semi-trailer Truck 2.1 (Added Container, No Supports, No Hardware Needed)

This is a dual-mode all-wheel no hardware required semi-trailer truck with shock absorption. The springs are printed parts. The semi-trailer part feels a bit stiff when pressed. The small bucket and the semi-trailer share the same front vehicle. When closing the tailgate, you need to slightly bend the side panel to latch it

2025.7.2 Update: Given the problem of vertical buckles being prone to breaking when printing with poor layer adhesion of filament, they will be separated and printed individually to strengthen them. See the red circle in Figure 2 below. Note: Hard filaments are harder to install; it is recommended to align them with a hard stone slab or similar and push them in. Softer filaments are looser. You can increase the wall count for the buckle reinforcement layers

2025.6.4 Update:

1. A small stepped ladder has been added to the wheel axle (see the box in Figure 2 below, old on the left, new on the right) to prevent first-layer filament overflow from causing the wheel to not run smoothly (if severe, please check if the bed temperature is too high). A small chamfer has also been added to the wheel (see figure below)

2. Added 1.6x container. If you don't have the cab part, please print the 1.6x pickup truck

2025.4.19 Update: Added 1 container print profile (requires support removal, see Figure 2). If you have already printed the semi-trailer, you can remove the side panels and replace them with this, or re-print the entire semi-trailer. The print profile includes the front truck and semi-trailer. If you only need the container, please use the mobile app to remove other parts. If you have high requirements for the strength of the door buckles, please print with caution. You'll need a bit of a fingernail to open and close the doors

1. Installation requires some skill. First, place the door's lower buckle (red circle) squarely into the slot, then press the upper buckle (arrow) and push it into the slot, see figure below

2. The figure below shows the supports to be removed (red circle). The red box indicates bumps after support removal, which need to be trimmed with a small knife, otherwise the door cannot be installed (be careful when using tools)

2025.4.13 Update: Added 1.6x semi-trailer truck and pickup truck print profiles. After print testing, installation requires some effort

1. There are obvious gaps after installing the semi-trailer side panels. If you mind, please print with caution. See the figure below

2. Note: If the printing environment temperature (chamber temperature) is too low or if the filament/build plate adhesion is poor, large parts may warp and detach from the build plate. If you mind, please print with caution. (after all, printing time is relatively long)

The GIF below is the assembly diagram:

1. First, install the red parts, avoid breaking the springs with the wheels. The semi-trailer baffles must be aligned with each slot before pressing firmly to avoid breaking the buckles

2. Then assemble the remaining parts. The overall assembly is not difficult, but requires some force

3. Tilt the wheel and place it onto one side of the axle buckle, then use your thumb to press the red circle area, and your index finger to apply force to the side of the wheel to snap it in (using the leverage principle). The other wheel is installed in the same way (see the GIF)

The red circle area (maximum gap approximately 7.3mm) in the figure below is normal. If there is severe collapse, please add supports yourself

Excavator in the preview image: https://makerworld.com/en/models/1083513-wheel-type-mini-excavator-no-support-no-hardware#profileId-1128573 

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 = =!!