Ice lock (~2 hours) by Prizmagnetic on Thingiverse: [https://www.thingiverse.com/thing:2752097](https://www.thingiverse.com/thing:2752097)

Summary:
-Should last for about 2-3 hours-Baffles keep the pin in line-Extra holes to help with ice expansion I found that it was pretty consistent (within 10 mins) in the same environment.  Do not over fill.  

This thing was created by Thingiverse user Prizmagnetic, and is licensed under Creative Commons - Attribution - Share Alike