Presto Black® Gel, Antique Black® Gel, and Antique Brown® Gels For Blackening Metal Surfaces Of Small Batches And Post Blackening Part Touch Ups

Gels for blackening metal surfaces of small part batches

Brush-on Presto Black® Gel, Antique Black® Gel, and Antique Brown® Gel are the perfect solutions for use on post processing part touchup or on manufactured metal parts not suitable for traditional processing lines. Without runs or drips parts can be quickly touched up on any surface in vertical or horizontal position.

Ideal for most metal surfaces including iron, steel, copper, brass, bronze and other metals, the Presto Black Gel, Antique Black Gel, and Antique Brown Gel are simple and safe to use. Applied at room temperature, the gel adheres to vertical surfaces and stays where applied without forming runs or drips or bleeding onto adjoining surfaces.

These new Gel finishes are the perfect solution when you can't or don't want to dip the entire part into a liquid bath container. They're great for sheet metal that needs only partial blackening, for touching up parts and for adding finish to machined components.

The Presto Black Gel, Antique Black Gel, and Antique Brown Gel chemical reaction takes only 5 to 10 minutes following surface cleaning to remove oil, oxides and welding flux. Color tone and depth is easily controlled by visual inspection and stopping the process by rinsing off with a wet sponge and sealing the finished surface. It's that easy.

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Tru Temp® Black Oxide Finish For Machine Tool Components. It’s Durable, Attractive Finish Resists Corrosion With Many Application Benefits

TRU TEMP® Black Oxide

High value tooling such as toolholders, workholding and turret press tooling takes on an attractive, protective black oxide finish when finished with the Tru Temp low temperature, non-polluting black oxide system from Birchwood Technologies.

Extremely durable, the Tru Temp process provides a satin black magnetite coating, 20 millionths thick (0.54 micron) with no effect on component material hardness or tensile strength. Components such as gears, sprockets and couplings operate with no functional change while the finish adds substantial protection. Tests verify Tru Temp withstands up to 100 hours of neutral salt spray (ASTM B 117) or several hundred hours of humidity (ASTM D 1748).

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Want to evaluate black oxide on your parts?

evaluate black oxide

Send us 5-10 non-finished parts along with the completed sample request form. Then Birchwood Technologies will test metal finishing options and provide full details and samples.

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"How to Black Oxide" ferrous and non-ferrous metals in-house.

HOw to Black Oxide

Our free Ebook provides an in-depth overview of:

How to Black Oxide
  • Benefits of in-house blackening
  • Corrosion resistenance
  • Range of black oxide options
  • How to handle rinse waters
  • Finishing equipment
  • Areas of opportunity

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"How to Antique" metal finish brass, copper, and bronze in-house.

How to Antique

Our free Ebook provides an in-depth overview of:

How to Antique
  • Benefits of antique metal finishing
  • Substrate metals in common use
  • Beginning the process: from cleaning to highlighting, to protective topcoats
  • Waste treatment options
  • Finishing equipment

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Ask the Finishing Pros 
at Birchwood Technologies

Have a Finishing Question?

Ask the Finishing Pros
at Birchwood Technologies

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