What print settings did you use to get the holes to look so neat? I've tried several times to print the lid and every time either the filament had to be so squished to the baseplate that I can't get an embroidery needle through or they don't adhere properly even when every other part of the lid adheres without issue.

I've tried generating with classic and arachne walls, polyholes vs regular, and slowing down to as slow as 20mms for the entire first layer. The results have been the same regardless of how I fiddle with build plates, plate temps, and filament temps

0.2mm layer, 50mm/s speeds for things that should be slow and 100mm/s for settings where speed doesn't matter that much (Creality silk PLA filament) also used convert holes to polyholes. Printed this nice on 1st try.

Thank you. Great use of all space on the print sheet. My wife loved it. One thought if you ever make revisions. Four little nubs on each corner on top. Matching small negative nub on base. So they can be stacked.
I created an insert to hold the bobbins for this design.
 https://www.printables.com/model/817475-23-bobbin-holder-insert
And a 40mm by 40mm bobbin so you can turn it either direction in this box.
 https://www.printables.com/model/817471-floss-bobbin-40mm-by-40mm (edited)