I screwed up the first print because I was tinkering too much with the slic3r settings and got a terrible bed adhesion. Then for the night I had to pause the print, and as it cooled down, the tray has detached from the build plate. I'm printing it again, now with standard 0.2mm layer size.

Putting a bunch of lids next to the tray is a bad idea; the lids will warp. Rather, do a separate job (maybe with a smaller layer height for the detail. I rendered a bunch of lids close to each other, and updated the files.

It came out usable anyway, but the lids aren't that nice fitting. I also need more of them.