Sliced Filament Dryer Spacer

I have a dehydrator (a Nesco FD-61) that takes 13.5" trays...far too large for most 3D printers. Slic3r will cut models on the Z-axis, but after adjusting the original dryer spacer for my dehydrator, I didn't see a way to cut it into pieces.

Fortunately, since it's in OpenSCAD, we can create a "cheese wheel" that will be subtracted from the spacer to cut it into a section small enough to print. On my Anet A8, I can cut a 90-degree section and print four of them (and all four will fit with n