I’ve been working on printing a box. The lid is about 4" across each side and has walls about 1" high. We’ve gotten the print pretty good, but still has a few problems. I am using the default slic3r configuration (though with a brim added), no support, ABS filament is from lulzbot. We’re using PET tape on a glass bed with a Taz 4. I’m also applying hairspray before printing.
The two problems might be related. The first is that the boxes tend to warp. The corners tend to lift off, though not as badly as when I first printed it. Even with the corners pretty flat, the bottom warps so it is not flat. Also, as you can see in the picture attached (hopefully), the layers tend to lift off one another and the box cracks along the layers.
I’ve tried walls 2mm and 4mm thick, the thicker walls seem to make the problem worse. I put slits in the box, and that seems to help some, but does not eliminate the problem.