Customizable measuring cups V2

I need to make tablespoon measurements regularly. Even the shortcuts to the measurements tend to be tedious (e.g. 10T = 1/2C + 2T). I figured that my 3D printer and I ought to do something about that. These measuring cups include a small lip to prevent liquids from spilling down the sides when pouring, a thumbhole cutout in the handle for easier grip, and a small label on the handle for identification.

This is version 2 of my "Customizable measuring cups." Improvements with this revision:
1. Made customization easier. The required math is done in code, so changing the size only requires knowing how many tablespoons you want to measure.
2. Fluted the bottom of the model for better printing without supports or active cooling at the expense of a bit of extra plastic and print time. The outside of the measuring cup is now shaped more like a diner coffee cup and is less spherical.
3. Fixed comments and variable placement so that customization in Thingiverse will be easier (assuming th