Slicer-Agnostic STLs for Double Stack IKEA LACK Enclosure V2

Loaded .3mf files into Prusa Slicer Removed negative volumes from affected parts, and then exported those parts as STLs Imported STLs into FreeCAD Bored a 7.3mm hole through each of the corner pieces, recreating the effect of the negative volume, thus allowing the exported files to be sliced in your slicer of choice