Cylinder Immersion Heater Install

[MattWeth]

The first crossed thread seems to be the very first one (second picture top thread). I'm just wondering how this can be recovered with the pointed tool you have descibed as, because there is no thread above it to cut in to, how will the tool removed the crossed thread on that particular thread ?

Start the tool in a good thread below the first damaged one and cut 'outwards' towards the damaged section.

 

[Monkey Wrench]

Start the tool in a good thread below the first damaged one and cut 'outwards' towards the damaged section.

Ok, thank you.

 

[Monkey Wrench]

Just to update, I'm afraid that all attempts to reclaim the thread using the excellent advice given on this forum proved futile and I ended up
buying a stainless steel "direct" cylinder form Screwfix which, together with a 27" immersion, worked out at £138 in total which is a pretty good
deal IMO.

Considering the "sacrificial anode" in the original cylinder had completely rotted away and the inside of the cylinder had started to deteriorate
accordingly it was probably just was well.

Thanks again for all the excellent advice.