Smart Flask Removal Tool

This is a splined socket tool created to more easily disassemble the cap of a smart flask.  A smart flask is a stainless steel beverage container with a digital thermometer in the lid. The idea is that you can determine the temperature of the drink before opening the lid.  These are cheap novelties at best and as expected they are not easily repaired.  If the battery needs to be replaced or reinserted into the contacts, manually prying open the cap for access can lead to more damage.

Measure your cap outer diameter and scale the model accordingly in your slicer software.  Print, insert into cap, use an adjustable wrench to turn, and viola!