Pot Rack with Drip Tray (Customizable)

This is a customizable .scad model that I designed using opencad that generates .stl files for little flower pots, a rack to hold them and a drip tray to sit underneath.

There are four separate parts you need to generate for this:
1. Pot
2. Pot insert (sits at the bottom of the pot to let it drain nicely)
3. Rack (holds several pots in a nice grid)
4. Drip Tray (sits under the rack to catch water that drains)

This project started out inspired by these little pots: https://www.thingiverse.com/thing:3449179. I was using them to sprout seeds but wanted a nice rack to hold them upright and allow them to drain cleanly. It seemed like a good project to experiment on, so in the end I made it all customizable so I could make arbitrary sizes.