![]() ![]() I have a National Cash Register Model 332 that I would love to restore. Removing old paint from brass cash register 2002 Any info out there about cleaning nickel plated brass cash register? Sheila J I'm an ex NCR Tech from the old days and would like current news to help in restoring an old brass Class 452 I got for Christmas. I have a old National Cash Register with the same problem. Trisodium phosphate or Sodium Metasilicate or some solvent to remove this lacquer before attempting to polish it might help. ![]() Soaking the part in a hot alkaline solution, or It is possible that the original finish was a lacquer, which was thin on the flat surfaces, thicker in the textured surface. After you remove the tarnish polish with aĬape Cod Metal Polishing Cloth and watch the shine come out! Rubber Gloves and don't breath the fumes. Needless to say (but I'll say it anyway) wear I apply it withĠ000 steel wool which won't scratch the metal. ( toilet bowl cleaner ) which contains Hydrochloric Acid.wash off as soon as you use it but it will definitely remove tarnish from Brass and copper. Tom D: I have tried Tarn-x and have had little success except with silver.you might try liquid toilet bowl cleaner However, there is a separate product called Tarn-X Brass Glaze.Ī. This is because brass is an alloy of copper and zinc, and the acids in Tarn-X effect zinc."
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