This container has been made with the newest Prusa firmware and slicer. I have used the new insert pause functionality to insert 2 mm lead. For the lid and bottom you need a circular piece from 38 mm. In the wall goes a strip from 44 mm.

For other printer brands you might need to add a pause code in the G-code at the right spots.

Slice the design in the Prusa and use the slider to find the spoth where the printer just wants to close the hole. Add a pause here.

You have to do this for the container at the bottom and the wall.

Also do this for the lid.

The container can be used for storing low radioactive material, for example thorium 232 as a calibration source for a geiger counter.

Prusa

i3 MK3

No

No

default

default

You also need 2 mm lead plate.
2 circular parts 38 mm and a strip 44 mm wide. The length I used was 20 cm, but you have to cut it while trying to fit it in to the right size.