Come from back anodising perfect. So seems like it’s from the welding process that turns them yellow
Can't remember where I read it but 40xx fillers are not recommended for parts to be anodized due to colour matching, the silicone content causes a massive change of colour.
the silicone content causes a massive change of colour.
Yes I have looked at the parts but I've no experience of getting parts anodized or what effects the 40 series rods cause, I was just mentioning a piece of information I'd read that seemed relevant to the thread.correct, but have you looked at these parts? The discolouration is nowhere near the welds. It's not like the silicon content is going to jump all over the surface of the entire part and make it turn yellow.