This is a simple enclosure to hold an RF choke or balun based upon a Fair-Rite FT114-43 or FT114-61 toroid.
There is provision for a standard 4 hole BNC connector at one end with a flying lead at the other. The lid can be glued on once complete. The photos show a choke example for 14MHz wound with 18 turns RG316 which I made for a coaxial vertical dipole.
I printed mine in PLA with a 0.6mm nozzle at 0.3mm layer height. This is a for portable equipment so PLA will be fine.
See my other models for a version that can cope with a taller FT114-31 toroid.
The author marked this model as their own original creation.