Dice container for Yahtzee dice game (5 dices W6 16mm) v2 / Würfel-Container für Kniffel Würfelspiel (5 Würfel W6 16mm) v2

Motivation/Idea
For the 5 dices I bought to play Yahtzee, I thought it would be handy to have a lockable container.
The container should be securely lockable and should easily fit into a pocket.
With a string knotted loosely through the center hole, the container can also be attached to a key-chain or back-pack when travelling.

As version 1 of this container only had plain surfaces, I added some decorations algned with the grooves on the sides that improve grip.

[1] Thread type:
  Specific thread, no standard dimensions.

[2] Suitable Dice Size:
  The container is designed for dices with 16mm  edge size.
  
  For larger dices, you simply can scale the model.

Print
Material:   PETG (or other)
Supports: not required
Brim:         not required
Serial printing (part by part) for better thread quality.

Assembly
Threaded lock:
Simply screw the lid onto the base after placing the dices in the container.
Be careful not to overstress the thread.

Optional Cord or Leather String:
By knotting a cord or leather string through the center hole of the closed container,
you can use the dice container as key-chain accessory, so you always have the dices at hand.
Give enough string length, so the container can be opened easily without removing the string.

Hint: 
Apply some silicone grease on the thread, so it can be easily be assembled and disassembled.
(Without grease, the thread tends to wind on and off somewhat “sticky”.)