Precocious *embryo* I should have said. :)
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I wonder if the grit of abrasive saw blades is too strong for that.
Grit!? Emery paper is all tht's needed.
Jonesy
Exactly, what if you don't HAVE Emery or sandpaper. Just abrasive saw blades? (or maybe a belt sander)
Soldering iron not hot enough, insufficient joint cleaning, use a better flux - old 60/40 flux cored solder does not contain the correct type of flux for reworking those old boards. Chemicals in the PCB material leach out and make soldering difficult. You need to use one of the modern aggressive types and clean it off afterwards. I've out of the game too long now and can no longer suggest which exact type of flux to use. There are some excellent no-clean types available now too.
Kester 44 solder and MG Chemicals 835 RA flux.
Cheers
Phil Hobbs
Yep - that looks like it would do the job.
Despite modern regulations only Lead solder and activated flux works properly on that sort of re-work/repair job.
About 15 years ago I had to source a fancy VOC free flux for a rework job. The particular stuff I used is no longer available but it was very good. Some variety of Multicore glop.
I notice that the new replacements only have a 6 or 12 month shelf life and are quite costly in small (syringe) quantities.
All my stock of solder is now old (15 years +) and the flux is ineffective. Looks like I'll have to find a syringe of some goo for my next job.
You can get RA flux in quarts and gallons from both MG and Kester. I recommend the MG stuff because it seems to be stable, whereas the Kester stuff crystallizes out after a few years.
Cheers
Phil Hobbs
At my current home use a couple of pints would last more than my lifetime. Even a 9cc syringe would be out of date after the first job. At 10UKP a pop that's a bit dear. I leave soldering delicate stuff to better eyes these days. Thank you for your input.
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