Printer part
What's a brim?
A few extra loops printed around the first layer, like the brim of a hat, to help a part grip the bed.
- Usually3–10 mm wide
- After printingpeels off
- Best forcorners that lift
Why it matters
- More grip on the bed means corners stay flat instead of curling up (warping).
- Tall, thin parts are less likely to tip over mid-print.
Tips from the workshop
- Leave a tiny gap between brim and part so it snaps off clean.
- "Mouse ears" are mini brims only at the corners.
- ABS and other warp-prone filaments love a brim.