Wheel cleaning!

I made a tool from a cloth pincher? (klesklype) so that I could easier clean the wheels off my locomotives.
 I filed down the tips and solder some copper plates to wires and glued them on with a "hot gun".

Then I take off the locomotive shell on clamp the tool on the connectors to the brushes for the motor.

I then turn on the power spinning the wheels and usually use a small cloth with some strong
universal paint thinner to wipe off the dirt from the wheels. If the wheels are really dirty I some
times use very fine sandpaper to clean also. But I not sure how smart this is because it can make
the wheels a little ruff and then gather more dust than usual?

PS: Also a good sours off information is found at http://www.ztrains.com/