Simple Screwtop Container

I designed a simple screw cap container. This is my third iteration, and I finally have a working model. This is kind of the culmination of lots of learning and failing.

I'll toss it on Thingiverse if anyone wants to print it. Search for flyingpurplecow to see all my stuff so far.
Now that I have working threads I will be using this on an upcoming project I've been working on. Hold on to your butts!