Fiberglass Pencil Views
A wire brush or fiberglass pencil brush will often abrade most or all contaminants of a surface. When retracted into the shaft of the brush, the hairs become stiffer, which allows for more vigorous cleaning of oxidized contacts. Don't scrub with abandon, however. Apply a fiberglass pencil brush with care, since you want to abrade only the oxidized film, not also the metal or plastic underneath. The Excelta Corp., which sells a variety of brushes, reports that its Fiberglass Scratch Brush is intended for fine deburring, polishing, rust removal, or cleaning and erasing in chemical etching processes. Contact cleaning is also a listed use. Other vendors of fiberglass scratch brushes include Widget Supply, Pemro, Micro-Tools, Cumberland Electronics and sellers of jewelry-making supplies like Contenti.