brim ear

a 20x0.2mm circle to put in the corners of your STL to keep it from warping up too easily. ex printing a box out of ABS.

scalable but 20mm is usually enough.

useful if your slicer doesn't have this feature or if the settings for it is unknown.

just put the STL in your slicer and put it into the corner where you want to avoid warping - done.

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https://ko-fi.com/jobis