Brick MOC Modification Guide: From Official Sets to Original Builds
Brick MOC modification is the step almost every builder takes on the way from following instructions to designing original models. It starts with something as small as swapping a color scheme and can end with a full structural rebuild. Either way, modification is what frees your models from the limits of the official design.
What Is MOC Modification?
MOC modification is the process of changing and upgrading an existing brick model. That can be as simple as choosing a different color palette, or as involved as tearing the build down to the studs and reconstructing the whole structure. The point is not to copy the set — it is to make the set yours.
The Four Levels of MOC Modification
Level 1: Color Swapping
The easiest form of modification. Take the official set's color scheme and rebuild it in a combination you prefer — a grey-and-white townhouse becomes a red-brick one, a bright sports car becomes a muted classic. No structural changes, but the model reads completely differently on the shelf.
Level 2: Detail Enhancement
Here you keep the existing build and add to it: extra decoration on a building facade, lighting for a vehicle, small accessories that tell a story. Detail work is where a set starts to look like a scene rather than a product.
Level 3: Structural Improvement
This is the core of brick MOC modification. Instead of decorating the outside, you rework the internals — adding movement, improving stability, or giving the model a new function. A fixed roof becomes removable, a static crane arm becomes posable, a fragile corner gets proper bracing.
Level 4: Complete Redesign
You keep the concept of the original design but rebuild it from the individual parts up. The subject stays; the construction, proportions and techniques are entirely your own.
Modification Techniques
1. SNOT (Studs Not On Top)
SNOT is one of the most useful techniques in MOC modification. By turning bricks so the studs face sideways, forwards or down, you can build smooth surfaces, angled shapes and far richer forms than a straight stack of bricks allows. Once you get comfortable with brackets and plates used off-axis, whole new geometries open up.
2. Color Mixing
Use parts in different colors to create visual depth, so the model looks more alive. Contrasting accents, gradient bands and darker recesses all help break up a flat wall of single-color bricks.
3. Modular Design
Split your model into several independent modules so it is easier to modify and upgrade later. If the roof, each floor and the interior are separate assemblies, you can rework one section without dismantling everything else.
A Modification Case Study
Case: Upgrading a Street Scene Building
Start with a basic street-scene building and add to it in stages:
- Number of floors
- Facade decoration
- Interior details
- Lighting effects
Working in stages keeps the build manageable and lets you check how each change affects the whole model before moving on to the next.
Recommended Tools
- Brick separator: essential kit for taking parts apart without damaging them or your fingernails
- Sorting boxes: modification work draws on many different part types, so you need them sorted and within reach
- Design software: Studio 2.0 is a free MOC design tool for planning a rebuild before you touch a single brick
Related Resources
On brickplan.cn you will find plenty of brick MOC modification instructions and tutorials suited to rebuilding. Combine them with the beginner's guide to MOC instructions and the MOC builder community guide to level up your modification skills quickly.
Final Thoughts
Brick MOC modification is one of the most enjoyable parts of the hobby. Start with a simple change, then work up to more complex projects, and you will watch your design instincts improve with every build. Head to brickplan.cn and start your own modification project today.