Thermos Lid replacement

My grandfather's Thermos's lid plastic had worn away over the years, and instead of buying a new one he asked if I could quickly design one for him.

The Top piece is too small on purpose, so you'll have to use a knife to widen the hole until it fits just right.

Some PETG fillaments are food safe! Check with your supplier.
https://toms3d.org/2018/02/05/things-know-petg/

Hope I saved you an hour or two of modeling and testing!