Brim

A brim is a flat, single-layer border printed around the base of your model. It increases the contact area with the build plate, improving adhesion and preventing warping.

When to Use a Brim

• Small footprint models that might tip
• Tall, thin prints prone to warping
• Materials that warp easily (ABS, ASA)
• Models with poor bed contact
• First layer adhesion issues

Brim vs. Raft vs. Skirt

Feature	Brim	Raft	Skirt
Attached to model	Yes	Yes	No
Layers	1	Multiple	1
Material use	Low	High	Minimal
Easy to remove	Usually	Sometimes	N/A
Helps adhesion	Yes	Yes	No

Brim Settings

• Brim Width: Distance from model (5-10mm typical)
• Brim Line Count: Number of outlines
• Brim Only Outside: Prevents brim inside holes

Removal

Brims are usually easy to remove:

1. Peel by hand if possible
2. Use flush cutters for tough spots
3. Light sanding or filing to clean edge

Alternative: Mouse Ears

Place small discs at corners only—less material, targeted adhesion help. Some slicers have plugins for this.