Picked up a rifle this weekend, got it home and noticed the front sight was loose. Turns out, original solder job was less than excellent and only flowed at the front and back of the base. Significant corrosion between the soldered areas probably detached the solder at one end.
I assume that thorough fluxing of the area to resolder the sight will damage the bluing, which I'm hoping to avoid. There are still soldered areas on both the base and the barrel. Anyone successfully resoldered a sight without needing to reblue? Is it possible to clean the solder area without fluxing, e.g., by thoroughly sanding the area to be soldered?