Try the Mouse Ears Generator — Anti-Warp Pads for STL
Add mouse ears (thin round pads) to the sharp corners of an STL, OBJ or 3MF to stop corner lift on ABS, ASA, nylon and large PLA prints.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Illustration. Open the tool for the real thing.
See it in action
The Mouse Ears Generator — Anti-Warp Pads for STL with sample data entered and the result showing.

What is the Mouse Ears Generator — Anti-Warp Pads for STL?
Warping starts at the corners of a part's first layer. Mouse ears are thin discs at those corners that spread the pull over a larger area and hold the corner down. They are cheaper than a full brim, leave a cleaner part and peel off with a knife. This tool finds the flat bottom of your model, takes its convex footprint and adds a disc at every sharp corner.
Set the ear radius, thickness (0.2–0.4 mm is typical), the minimum corner angle and an outward push, preview the result and download a new STL, 3MF or OBJ, or only the ears. The processing runs in your browser.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Footprint hull corners sharper than your angle get ears.
Radius, thickness and outward push.
Download just the pads to merge in your slicer.
Runs locally.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This maker tool | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
Are the ears fused to the part?
They overlap the corner; slicers merge them into one layer.
Does it work for round parts?
Round bottoms have no corners, so use a brim instead.
What thickness should I use?
0.2–0.4 mm.
Can I export just the ears?
Yes.
How do I use the Mouse Ears Generator — Anti-Warp Pads for STL?
1. Drop in the model lying flat. 2. Set radius, height and corner angle. 3. Check the preview. 4. Download the model with ears.
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Try the Mouse Ears Generator — Anti-Warp Pads for STL now
Add thin disc pads to the corners of a model to stop warping, without a messy brim. Free to use.
Try it free