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Old 05-02-2011, 12:15 PM
leathermang leathermang is offline
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Join Date: Sep 2001
Location: central Texas
Posts: 17,281
If you use sandpaper to get them down to the right size... just do NOT use ' wet and dry' the typical Silicon Carbide...
and that applies to cleaning the copper armature also... flint sandpaper and good cleaning afterwards is better... the insulation between the copper segments needs to be undercut slightly ...which can be done by hand with a filed to correct size hack saw blade....and the armature can easily be cleaned by rotating with a drill and holding a strip of that sandpaper around it while revolving... quit as soon as it is shiny...
It is typical standard operating procedure to freshen the armature when replacing the brushes... for longer life...
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