black finishing for copper, brass and silver 50 ml

Copper, brass, and bronze acquire a black surface through this treatment; this process is also known as blackening. Silver also acquires a black surface through this treatment.

Depending on the exposure time, the intensity of the color can be varied from brown to dark brown to black. This is particularly useful when creating an elegant, antique-looking finish.

• Ideal for creating an "antique" look
• for all non-ferrous metals
• Color depth can be individually determined by the exposure time
• PTFE- and silicone-free

Application:

1. Pretreatment

The parts to be colored must be thoroughly degreased and free of any oxidation. First, pretreat with fine steel wool or sandpaper (maximum 380 grit). Then degrease the workpiece (we recommend Ballistol Cold Degreaser) or treat it with 30% hydrochloric acid. Finally, rinse thoroughly with warm water.

2. Application

Application depends on the size of the area to be treated: apply with a brush, spray, or by immersion.

The ideal immersion temperature is approximately 30–35 °C. A lower temperature slows down the process and thus extends the reaction time. Caution: The immersion temperature must not exceed 40 °C. The immersion time is approximately 1 to 3 minutes. Depending on the desired tint, the workpiece should be immersed for a shorter or longer time.

3. Aftercare

First, rinse the workpiece with fresh water after application. Then, wipe off any water with a dry cloth or rag and apply a clear varnish, wax, or oil for a clean finish.

Want to achieve a lighter shade?

Color variations by dilution up to 1:4

The bluing agent can be diluted with water up to a mixing ratio of 1:4. The more water, the browner the color. The less water, the darker the color. Applying pure results in a black coloration on most non-ferrous metals.