Sounds like your neighbor had a copper ionizer, not an SWCG. Unfortunately, the repair you describe would not work at all on an SWCG cell, which uses titanium or other exotically coated base plates -- to avoid loss of plate metal into the water.
Sounds like your neighbor had a copper ionizer, not an SWCG. Unfortunately, the repair you describe would not work at all on an SWCG cell, which uses titanium or other exotically coated base plates -- to avoid loss of plate metal into the water.
Also many ionizers do not use just copper. Many are copper and silver so that cheap 'fix' is not going to do the job!
Retired pool store and commercial pool maintenance guy.
Just cleaning the cell with a muritic acid solution on a 3 year old system did the trick of getting it to work again. May be worth the try.