Someone I know is hand-making a game that uses hexagonal pieces. They are using epoxy modelling clay and other miniature figure making materials. When I saw they were cutting the bases by hand I offered to print simple plastic bases for them or make a convenient hexagon "cookie-cutter" so that they would line up with each other better. These pieces are 33mm along a side or 66mm from two opposite points... so they are smaller than Catan pieces (which are 45mm on a side and 90mm across BTW), however as the script is parametric it could be modified to make compatible tiles.

Changes from previous versions:
0.3

• Added proper comments and cleaned up code
• Implemented Parametric Variables
  0.2
• switched to using 6 sided conical frustrum
  0.1
• First attempt using extruded 6-sided polygon

1. Decide on size of your pieces and modify .scad variables to suit, make sure to choose if you want a base or cutter using the is_base variables and enter your printers layer_height if you want a hollow base
2. Save, generate shape and export .stl
3. Print as many bases as you will need pieces or just a few cutters and cleanup rough edges
4. Cut your modelling material with the cutter or smoosh it into the hollow bases
5. Make 'em pretty
6. Play!