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

[Ben Stuyts]

> 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:

http://nl.farnell.com/duratool/bu1019-1/pencil-brush-4mm-glass-fibre-scratch/dp/1421553

It’s can be *very* abrasive.

Ben