Ben Stuyts wrote: > 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. Had one of those for years. Very handy for cleaning switch and relay/contactor contacts. Just don't rub too hard. Neil -- http://www.njohnson.co.uk