[ARC5] Cleaning Brass

[Robert Eleazer]

I bought a National NC-270 on ebay several weeks back.  It was pretty cheap but has some corrosion.  Most of it I can handle with rust converter and paint.

But the main tuning cap has a lot of corrosion.  The frame is rusty. The shaft is black and along the outer end is positively caked with corrosion. The shaft wiper on the end is hopeless.

I figured I would have to replace the tuning cap and bought one from Gary.  But a guy over on QRZ pointed out you can solder a piece of solder wick onto the shaft and onto the frame to substitute for a bad wiper.  I'll try that. 

However how do I clean the corrosion?  Deoxit did nothing much.  A mixture of white vinegar and baking soda did little at most.  Only thing that worked at all is Brasso - and it is designed to polish with, which is hardly feasible.  I did get some off with it.

Y'all have any ideas or experiences?

Thanks!

Wayne