Azure Abyss Biotech Field Protection Green Crab Mech | Fully Articulated | Hatch Can Open and Close | Compatible with Lego

Update:

2026/6/3 

I have modified the seat part, and now it can fit Lego minifigures!

Friendly Tips:

🧼 Please be sure to clean the build plate before printing:
Because the model is rich in detail and contains many small parts, to ensure printing success rate, please be sure to clean the build plate! Clean the build plate! Clean the build plate! Important things are said three times.
💡 Recommended cleaning method: Use warm water + dish soap (the kind used for washing dishes) with a sponge to gently scrub the build plate surface, then rinse with clean water, and wipe dry with a clean, lint-free cloth. This can effectively remove grease and dust from your hands, making the first layer stick more firmly. Do not touch the cleaned build plate surface directly with your hands!

🧩 Easy to Assemble
All parts feature snap-fit or slot designs, allowing for initial assembly by hand. To accommodate different printer models, I deliberately left wider tolerances in some areas. If parts are loose, a small amount of super glue can be used to secure them without affecting appearance or function. It is recommended to test fit first before deciding whether to use glue.

⚙️ Minimal Supports
To balance complex structures and printing success rates, only a minimal amount of support is reserved in the model (concentrated in local overhang areas). After printing, it can be removed with simple processing, without spending a lot of time cleaning.

⏳ Print Time
Due to the rich structural details or large volume, the total print time for this model is usually longer (with official default settings). However, every print will yield a sturdy, reliable, and worthwhile finished product.

🔧 Expandable / Customizable
Adjustable space was reserved during the design for future updates and replacement of accessories (such as card slots, bases, pendants of different sizes, etc.)

⚠️ Safety Warning
Contains small parts, adults please supervise children during play or assembly to prevent ingestion!

⭐ Thanks for Your Support
It was not easy to create, if you like it, please give it a five-star rating! If you have any questions, please leave a comment first, and I will help you solve them as soon as possible.

Have fun playing~

Background Introduction:

Star Sea Pathfinding · Qingyuan Biotechnology · Terrestrial/Space Station Field Protection Mech

Pilot: A red fish, from Qingyuan Deep Sea Research Station's Third Field Maintenance Team. Its name is Gun Gun, and its name is like its body shape, round and plump.

Model Specifications
Model: M-C05-AZ "Blue Crab"
Role: Terrestrial Field Protection / Parts Repair / Snack Consumption During Standby
Height: Standing 1.7 meters
Color Scheme: Blue-white mech body, light gray seals at joints, blue hood, the whole body accented with blue parts

Appearance

The Blue Crab is a heavy-duty protective mech with a square profile, specifically designed to provide a life-sustaining environment for the Qingyuan deep-sea fish clan during terrestrial or space station operations. The hood is made of transparent, high-strength material, filled with harmonic crystal circulation fluid. When Gun Gun blows bubbles inside the hood, they stick to the inner wall for a long time without bursting.

Two sturdy main arms, each ending with a crab claw-style mechanical hand. They can tighten bolts, clamp pipes, and, when the supervisor isn't looking, transfer snacks from the left hand to the right. An additional mechanical arm on the back, with independent joints, can retrieve replacement parts from a bowl-shaped compartment behind it. Besides parts, the compartment also permanently holds compressed snack bars, harmonic crystal gummies, and a pack of roasted fish fillets, self-proclaimed as "emergency rations".

Story

Gun Gun is the Qingyuan Deep Sea Research Station's notoriously most idle field mechanic. Not because he's inefficient—he fixes things faster than anyone else. The speed is because once repairs are done, he can legitimately go into standby, and during standby, he can "check if the temperature control function of the back parts compartment is normal".

Once, while he was repairing a loose panel on the exterior of the space station, the supervisor asked for an update over the comms. He said he was checking if surrounding parts were affected. In reality, he was eating a pack of harmonic crystal gummies, the sound of the wrapper being peeled perfectly masked by the mechanical whir of the crab claw. Afterward, the supervisor retrieved the work logs and found that he had remained in the same spot for twenty minutes. Gun Gun's explanation was that the panel needed to cool down. In a vacuum.

The Blue Crab's back mechanical arm was originally only for grabbing parts, but Gun Gun secretly added a rotating joint to it, allowing him to easily push snacks from the deepest part of the bowl-shaped compartment to the shallower parts when retrieving parts. This modification was not written in any maintenance report, but all similar Blue Crab armors developed by Qingyuan Deep Sea Research have since come standard with this rotating joint in subsequent versions. Qingyuan's engineering department never admitted it was for snacks. They claimed it was to optimize the part retrieval path.

Assembly Instructions:

Previous Works: