Re: Poor solderability of old components, solutions?
A cheap and easily available etchant for cleaning up metal is car alloy wheel cleaner. It's basically an acid and detergent mixture. It's job is to remove iron dust build-up from the debris from brake discs and pads, try some on a tarnished penny! the effect is quite rapid. Be sure to wash the stuff off before soldering. I use 'Wonder wheels' for all sorts of cleaning jobs, and for removing tarnish before assembling old tarnished PCBs
There is also 'Oust' kettle descaler which is citric acid. This etches and cleans even quicker... I use a lot for decoking shower mixer valves as well.
David
__________________
Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
|