where does the metal come from

[PTmowerMech]

Is this some sort of trick photography? Because I can't see where the metal (for the spring) is coming from.

 

[StarTech]

The wire coming out a pin hole in the D shape metal shaft. So small that once the wire is shave off it appears to disapppear.

 

[PTmowerMech]

The wire coming out a pin hole in the D shape metal shaft. So small that once the wire is shave off it appears to disapppear.

Ah, I see it now.