28-08-2014, 12:56 PM
To do that sort of work you need a soldering iron that gets really hot - without dramatically over-heating the surrounding area of the pcb. For that purpose, I use a Metcal soldering iron. I have other makes / types of iron available, but the Metcal seems to be the only one that is up to the job. As for clearing out the holes, I use one of those green-coloured solder suckers, but always check that it is is good 'sucking' order first. That often entails a good clean out of its interior, perhaps a new washer and sealing ring and usually a new PTFE nozzle. Occasionally, the additional use of fine solder wick helps too.
Al.
Al.
