Batz
Batz Brewery...Hand crafted beers from the 'Batcav
- Joined
- 8/8/03
- Messages
- 12,735
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I don't believe the dark spots will do any harm, my first 3v system had these. I think you will find it is more from the heat generated during welding.
My kettle had a large dark mark around the welded nipples, I did use pickling paste on these and never had any rust develop. I bet my MLT and kettle are still going strong without issues.
My kettle had a large dark mark around the welded nipples, I did use pickling paste on these and never had any rust develop. I bet my MLT and kettle are still going strong without issues.