Originally Posted by
MikeB52
Before you decide on pins and such Andrew, Google dissimilar metal corrosion to get some info on compatible metals, lest ye re-pit that beautiful razor.
If the scales are aluminum you really want to stay with an electrically similar material for the pin and washers, if possible, to prevent re oxidizing. Or somehow seal the underside of the brass before repinning, where it touches the aluminum.
Basically the metal ions in the scale moved to your washers and pin at the pivot and left the craters behind.
Would suggest either washerless or plain carbon steel washers and pin to stay in the same anodic range.
Boats use aluminum, or tin sacrificial anodes designed to sacrifice their ions to the engine and such so those items don't rust while in water all the time, the anode does. Your scales started to do the same thing for the sake of the original washers and pin.
Course it took over a hundred years so not too big a problem really. Lol.
:beer1: