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Brush-on blackeners offered for touchups, small-scale finishing

Birchwood® Technologies now offers three brush-on metal blackeners in quart-sized bottles.

Presto Black® BST4 is suitable for application on most iron and steel components of any size in limited quantities. It imparts a durable black finish that can be sealed with a rust preventive for extra finish protection.

Antique Black® M24 provides blackening or browning of brass, bronze, and copper alloys. It produces US10B finishes on large architectural surfaces, sculptures, and engravings. Reaction speed and finish color are controlled by diluting the concentrate with water.

Designed for aluminum alloys, Aluma Black® A14 provides a durable, smooth black finish. It can be applied undiluted to blacken entire parts or used as a touch-up for black anodized parts that have been damaged or remachined. It is suitable for all types of aluminum parts, including engravings.