Brick Layer for Stronger 3D Prints Now Yours to Use

You finally dialed in your extrusion settings, your filament is dry, and still, your part splits clean along the layer lines the moment you put it under stress. It’s the kind of failure that turns a solid-looking print into a structural letdown. Layer adhesion has always been the Achilles’ heel of FDM printing. But there’s a smart workaround that’s picking up steam among engineers and serious hobbyists alike: brick layer 3d print.

By offsetting infill and wall patterns across layers, like bricks in a wall, you spread out stress points and eliminate straight-line weaknesses. No special filament, no fancy upgrades, just a smarter way to slice. If you're tired of trial and error and want prints that just work, our professional 3D printing services can handle the heavy lifting for you.

What Is Brick Layer Slicing in 3D Printing?

Brick layer slicing process (also known as staggered infill or alternating infill) is a slicing technique that offsets the internal structure or shell paths between layers, mimicking the way bricks are laid in a wall.

Instead of lining up layer after layer in perfect vertical stacks, which creates continuous weak points, this method shifts the pattern every other layer.

Real-World Strength Test: Brick Layer vs Regular

In a test conducted by CNC Kitchen, two identical PLA and PETG brackets were printed, one with standard infill, one using a staggered brick layer pattern. The result?

That’s nearly a 14% increase in strength, without changing a single hardware component.

Source: cnckitchen.com

Was Brick Layer Slicing Actually Patented?

Anything that makes your parts stronger without changing hardware is worth money, and worth locking down and getting patented. Back in the '90s, Stratasys patented a version of the brick layers to boost part strength by offsetting extrusion lines. That patent expired in 2016, which should've opened the floodgates.

But in 2020, a new U.S. patent popped up with a similar idea, throwing some shade on whether it could be freely used, at least commercially in the U.S.

The good news? For most makers, hobbyists, and non-commercial use, you're in the clear. And outside the U.S., there’s no patent blocking you at all. So if you’ve been holding back, now’s the time, brick layer slicing is fair game.

How To Use the Brick Layer Slicing Process

1. Open Your Slicer Software

We’re talking Cura, PrusaSlicer, Bambu Studio, OrcaSlicer, whatever you're using to prep your prints.

2. Choose a Compatible Infill Pattern

Use infill types like:

Patterns like Gyroid or Cubic don’t benefit as much, they’re already 3D-distributed.

3. Enable Layer Alternation or Staggering

In Cura:

● Go to Infill Settings

● Turn on Infill Layer Alternation (may appear under advanced settings)

● Bonus: For walls, enable Alternate Extra Wall to stagger perimeters too

In PrusaSlicer:

● Under Print Settings → Infill

● Enable Alternate Infill Every Layer

In Bambu Studio / OrcaSlicer:

● Look for Infill Layer Alternation or Zig-Zag Combine Layers

● Also try toggling Staggered Shells for added strength

4. Adjust Infill Density (Optional but helpful)

A denser infill (30-40%) helps this technique shine, especially for functional parts.

5. Slice It and Preview the Layers

Use the preview to confirm that the infill pattern shifts every layer like bricks.

No vertical lines = good.

Staggered joints = better.

6. Print, Test, and Flex

Run your print and check for layer adhesion and strength. You’ll notice the difference, especially if you're printing brackets, clamps, or anything load-bearing.

Brick layer slicing is a low-effort, high-reward technique that significantly improves the strength of FDM prints. Whether you’re designing load-bearing prototypes or functional end-use parts, it’s an optimization well worth your time.

For makers and professionals seeking consistently strong, high-precision parts without the trial and error, JLC3DP offers expert 3D printing services and ensures your designs are as tough as they look.