[sdiy] Solder corrosion - what is it? [hijack]

Ben Stuyts ben at stuyts.nl
Fri Nov 4 18:15:55 CET 2016

> On 4 Nov 2016, at 17:43, MTG <grant at musictechnologiesgroup.com> wrote:
> On 11/4/2016 3:39 AM, Steve Lenham wrote:
>> Neither water nor IPA dissolve the corrosion significantly. The only way
>> to get back to a shiny tinned surface is with slight abrasion e.g. a
>> fibreglass pencil, etc.
> I've never ever heard of a fibreglass pencil before, but it looks interesting. Is this helpful in removing soldermask? I have some instances where I have to clear the solder mask off of a ground fill or whatever to add a wire and a Xacto knife is not really helping much.

It’s something like this:


It’s can be *very* abrasive.


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