The box is used in the transport of chemical samples put in a glass vial. Depending on the size of the vial it is possible to extend the box using a ring with two threads. The base box with windows may be used for the same samples/vials when one needs to see the content before opening the box.
I have printed all parts on MK4 using PLA with 0.1mm layer height and the thread works perfectly.
The author marked this model as their own original creation.