This is a PCB or wire holder for your soldering work.

The middle part can be pushed down! 
Now a PCB or a wire can be clamped in!          

As an example, it holds an ESP 32 board. 
For bigger things or 2 wires use 2 holders.

tested with Petg, infill 15%, no support
high: 4,4 cm, width: 3 cm