Blackfast 183 will darken bright brass surfaces to a dark brown. The bath should be maintained at a temperature range of 35 – 40c for the best results.
At lower temperatures, the process is slower and the recommended immersion time of 5 minutes exceeded.
On removal from the solution, the brass is allowed to dry then lightly abraded to remove some of the coating on proud surfaces. What remains will be within the crevices and surface of the brass revealing an antiqued surface.
Components must be free from grease
Water wash to obtain a wetting condition
Immerse in Blackfast 183 until brass reaches the required shade of brown. Dilution 9 parts water to 1 parts Blackfast 183. Average dwell times: Brass plated items – 3 minutes
Brass – 5-10 minutes
Water rinse
Dry components – methods available:
i) maize
ii) oven dry
iii) hot air
Relieve components if a contrasting effect is required – methods available:
i) rotary vibrating machine
ii) typhoon barrel
iii) manual clean with abrasive paper/cloth
iv) polish using a rotary bench polishing machine
Lacquer finish if required
View complete technical information on how to effectively apply the various relevant solutions for your blacking production line.
Information for the safe handling of both Supplied (Concentrated) and Working (Diluted) Solutions.
In each of the guides on this page, you’ll find testing processes based on proven tests for checking and adjusting the strength of our solutions
Colour depth is determined on how cream is applied, and how long it is left on the surface.
Components must be free from grease
Water wash to obtain a wetting condition
Use a clean cloth or tissue to rub or dab the BF182 Cream onto the surface of the brass. Leave on the surface for anything up to 2 minutes, or until the desired colour is achieved
Water Rinse
Dry with a cloth or tissue
Lacquer finish if required
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Blackfast Chemicals Ltd is a company registered in England and Wales. Registered number: 05368415.
Registered office: Unit 5, Russell House, Molesey Road, Walton-On-Thames, Surrey KT12 3PE.