Spice shelf with holders

After the spice bottles had fallen into my head too many times when opening the doors, I decided to make something that keeps them organized and in place. A couple of tries later, it works pretty well. The first ones I made too thick "holder arms" so they broke. Next they were too thin and floppy. In the uploaded version I think I've nailed it pretty good, but it requires some care when slicing to get it working.

IMPORTANT!
Check the holder arms in layer view to make sure they are 100% filled (yellow color in Cura). At certain settings, Cura leaves them hollow despite infill, that will make them too sloppy! If they are hollow, change infill percentage and/or wall thickness and try check again.

Print the horders laying down (like their final rotation). You probably need at least a narrow brim to avoid having them come off the print bed and cause a mess.

It might be a good idea to print the bottom parts separately so you can print those with less infill.

The modular versi