Quote History Quoted:
No, the only thing that gets rid of it is taking off the skin.
There is a chemical whitening process that can be done, but it's pretty nasty and affects the dimensions a bit.
Also, it has to be done before machining. We chose not to do it on these because of time constraints.
View Quote View All Quotes
View All Quotes
Quote History Quoted:
Quoted:
Will media blasting of any sort take that out?
No, the only thing that gets rid of it is taking off the skin.
There is a chemical whitening process that can be done, but it's pretty nasty and affects the dimensions a bit.
Also, it has to be done before machining. We chose not to do it on these because of time constraints.
I have had to anodize several uppers with that type of problem (at least it appears to be the same problem... it seems like it was more common on upper receivers than lowers, and I don't recall ever having the trouble on any small parts)... I really don't think there is ANYTHING that can be done. I've tried a lot of different things along the way, including the chemical you mentioned, Mike, (I think it was Nitric Acid, but can't remember for sure), but even that didn't seem to make a difference (it sure does make it look nice before you anodize, though). Media blasting makes it "disappear" until you anodize, then you see it's still there... you can see it when it comes out of the acid, before you even dye it. It's a real bummer, because you work so hard to make everything just right and then something like this screws up the works.
Guys, high-quality anodizing is absolutely unforgiving... I quit doing it for a reason and never looked back.
NDS, thanks for bringing these parts to the market, and also thanks to US Anodizing for catering to our "retro needs"!