Parametric Incense Tube & Box Storage

Inspired by HSW, I wanted to find a way to store my incense tubes (and boxes) in the top side corner of a shelf. It's by no means perfectly accuratly parametric (you may find some quirks here and there) but this was my return to OpenSCAD and I hope that it's as useful for you as it is for me! With the default settings you can store 14 tubes and 2 boxes, but if you use OpenScad, you can configure it however works best for you!