Mouse Ears for your slicer.

"Mouse Ears" add them to your part in your slicer if you're having trouble keeping the corners down and your slicer doesn't already support this feature.

mostly doing this to play with the customizer. so this thing is customizable so try it out.

otherwise there are a bunch of premade ones with differing radiii and thicknesses as specified in the names.

let me know if this was helpful to you by posting a make. a screenshot in your slicer of what you added them to might be interesting.