I recently had a new bridge plate and knobs made from aluminum for my guitar. They are bare uncoated aluminum. How would I go about protecting the parts from oxidation and corrosion? I just worry about the bridge plate because of sweat from playing my guitar near the bridge. There are no local places to get the parts chromed or anodized unfortunately.
Aluminum rusts just like Iron, but Aluminum Oxide (unlike Iron Oxide) is tough and forms a layer a molecule or (a few) two thick and does NOT flake off easily. A related form you'd be familiar with is Corundum (2 Aluminum molecules and 3 Oxygen molecules + some trace elements), aka sapphire or ruby depending on being blue or red respectively. This is the same material that Rolex uses to make its watch faces; the famous sapphire surface that is highly resistant to scratching. In short, you have nothing to worry about, especially as aluminum used for commercial purposes is often alloyed with Chromium to increase durability.
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Aluminum gets a white coating of aluminum oxide and then does not further react with the air. You can put clear nail polish on the bridge and knobs.
Hey Scott Aluminum really doesn't require a lot of protection it oxides from electrolysis though ..when you get two dissimilar metal together like brass and Al this takes place..since most of the upper strings on a std a6string are brass you in a fix ,,the best thing to do is put just a little 3 in one oil ,,just a little I said right where the string and the bridge come together ..If the rosewood frets turn green that's the tannic acid in them working on the copper ion in the fret material ,,,a little baking soda and a small brush will work wonder there...oil,soda and keeping things clean will keep that Stratocaster good for years...Well have a good one from the E
