helicoil 101

[Konstantin Bogach]

Hi listers.

I bought installation tool, tap and coils to repair M6x1  thread but I
can not find instuctions how use the tool.  Does anybody have a link to
a good instructions on web?  I was not able to find such yet.  It is
pre-winding tool: threaded shaft inside a plastic piece with cutout.  I
can not figure out how to pre-wind a coil (what should be done for 6mm
thread according to every source I found).
Do I need to buy a tang breaking tool for blind holes? Can I get away
with a hammer and a metal rod?

I appreciate your help.

Konstantin Bogach.