The DeOx/DeSmut is an etch step. It is not as aggressive as some other chemicals. Aluminum that has setup for months oxidizes enough to turn the color from a bright silver to a dull gray. At this stage it takes something aggressive to remove it, ie. machining, sanding, blasting. I bead blast my parts in that case. If I machine parts and cannot get to them for a little while, I'll spray them with WD-40 to retard oxidation. Are you having a problem to cause you to consider the need for an extra step? Sifting through old posts can get confusing, as some were written before and in the beginning of LCD. I only have one book, so I do not have anything to compare to. I have seen descrepancies that appear to be from documentation not keeping up with procedure. The only thing I can think of without seeing would be the anodize stripper that is used to strip a part that has been anodized and needs to be stripped to be reanodized. The DeOx/DeSmut comes in the kit, at least it does now. I don't know if it always has.
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