cleaning up edge connectors

[Bill Gunshannon]

On 4/28/22 18:33, Jonathan Chapman wrote:
> If there's bad/deep corrosion, I hit it with the ink eraser (I have a bunch of Eberhard-Faber ones that look like a wooden pencil, you sharpen them like a pencil too). If that won't touch it, I use the stainless steel toothbrush.
> 
> Corey Cohen has some plating solution that you dip a pen in, intended for jewelry repair. The plating does not hold up well over copper, you need a layer of nickel over the copper first. So, if you're removing down to the copper, you'll have to find a way to put nickel on first.

Copper?  Mine all look like solder.  Probably copper underneath but
the exposed part is lead which probably explains why they seem to
corrode so easily.

bill