How to use Parisian tanning essence

Black staining / burnishing of brass

In this article we would like to show you how to blacken brass and copper. Originally, liver sulfur or Parisian oxide were used to burnish or blacken brass. The major disadvantage of sulfur liver is the strong odor nuisance when using this stain. Parisian Oxyd is very expensive.
Bengs Modellbau uses the black stain Balistol Nerofor to blacken copper and brass. The effect is the same as with Parisian oxide or sulfur liver, only that it is affordable and does not smell.

 

Work steps for browning and black staining.

Pretreatment of the component to be pickled

First the part to be burnished should be finished. The surface should also be finished. Subsequent finishing or polishing removes the dark coloring of the black stain from the component. The brass or copper part must of course be free of dirt, grease and oil. It is also important that the part to be pickled is metallically pure. This can be achieved by sanding with abrasive fleece or steel wool.

Dyeing with black stain

The non-ferrous metal stain for brass, copper and bronze can be used cold. The part to be stained can either be hung in the liquid on a wire or painted with a brush. If you brush your component you should do this several times to get an even color. The black stain turns the component first dark brown and then black. The dyeing process can take 1-3 minutes, depending on how fresh the black stain is. After pickling, the blackened brass components should be rinsed thoroughly with hot water.

Available here in the shop: Black stain for blackening brass

Video Black staining / burnishing of brass

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