one shot drain cleaner - de-rusting

[Jamie]

See

Alan, that's a whole hundred pounds! Comment from missis "Not more money on those damn cars!" I am one of those "impecunious enthusiasts". Cost me next to nowt only my time and means I am not watching various rubbish on tv.
Cheers,
Dave.
PS Different situation if you are working and have cash available.

Parazine and Bob, 
    what ratio of washing soda to water do you use?

I am doing this at the moment and using two kettles full of water and a small handful size amount of soda. It is working well.

Jamie.