One benefit of using CP-90 is that it can prevent undercutting of coatings.
What this means is that corrosion is an active process, and the result of the process is that the rust you see is the spent energy. Undercutting is the corrosion process causing the coating to lift as the corrosion pushes the coating away from the metal surface.
Active undercutting of the coating is where bubbles appear first, then the flaking occurs, or the lifting of the coating.
CP-90 will work its way through the coating, and halt the process without damage to the coatings used on 3rd Reich scabbards. I would not use CP-90 on scabbards that are leather bound, only coated types. If a scabbard is anodized, usually these are clear coated, but over time, this coating wears away from wearing of the dagger first, and then from the activities associated with handling if careless handling occurs. Anodized scabbards will benefit as well, specially those that show active corrosion problems.
If you have a scabbard that looks like it is fresh from the factory, IE, unissued, the benefit of use of CP-90 is that between the scabbard fittings and shell, crevice corrosion will be held at bay, IF you are in an area where you suspect that corrosion is an issue to begin with.
Not sure about the cadmium you wrote of Sal, as the product I have in inventory shows no report on the label of concern. Nor has the manufacturer advised of an issue there. I will talk with them this upcoming week to see what is up on that.
I would not try to remove any of the red oxide associated with the corrosion, or pitting for that fact on the blade (grey spots on the blade are actually pitting corroison) as trying to do anything to clean up the metals may devalue the item. Work to preserve it is the best way to go.
Honolulu Rich
What this means is that corrosion is an active process, and the result of the process is that the rust you see is the spent energy. Undercutting is the corrosion process causing the coating to lift as the corrosion pushes the coating away from the metal surface.
Active undercutting of the coating is where bubbles appear first, then the flaking occurs, or the lifting of the coating.
CP-90 will work its way through the coating, and halt the process without damage to the coatings used on 3rd Reich scabbards. I would not use CP-90 on scabbards that are leather bound, only coated types. If a scabbard is anodized, usually these are clear coated, but over time, this coating wears away from wearing of the dagger first, and then from the activities associated with handling if careless handling occurs. Anodized scabbards will benefit as well, specially those that show active corrosion problems.
If you have a scabbard that looks like it is fresh from the factory, IE, unissued, the benefit of use of CP-90 is that between the scabbard fittings and shell, crevice corrosion will be held at bay, IF you are in an area where you suspect that corrosion is an issue to begin with.
Not sure about the cadmium you wrote of Sal, as the product I have in inventory shows no report on the label of concern. Nor has the manufacturer advised of an issue there. I will talk with them this upcoming week to see what is up on that.
I would not try to remove any of the red oxide associated with the corrosion, or pitting for that fact on the blade (grey spots on the blade are actually pitting corroison) as trying to do anything to clean up the metals may devalue the item. Work to preserve it is the best way to go.
Honolulu Rich
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