Please bear in mind you have three different steels . The original , the new tubes and the weld filler .
These will all have different hardness's and can/will all colour slightly differently .
Some blacking will cover better than others and it was my experience that in some cases the higher the polish the more likely any colour difference will show .
Exactly. Of the few times I’ve had seams laser welded, only once was it less intrusive than a traditional seam done well. Other times, the dissimilar metals just didn’t bode well. I won’t do anymore with welds.
