50ml Toy Bluing Blue Liquid HW Zinc Brass Birchwood

This is a trusted, domestically produced, room-temperature blackening agent ( bluing liquid) with a proven track record of sales on Mercari and other flea market sites (including those starting with Y).

This is a 50ml bottle of undiluted room-temperature blackening agent (bluing liquid) for toy .
The item is brand new and unused.
It comes in a dedicated bottle (with markings) for bluing liquid that prevents leakage even after long-term storage.
It can generally be used for purposes other than toy , as long as the material is compatible.
The parts shown in the product images are sample images of Tokyo Marui steel and zinc alloy parts that have been blackened.

Compatible materials include HW (heavyweight resin), zinc alloy (recommended), brass (recommended), copper (recommended), and iron (steel).

In addition to regular bluing, this bluing liquid is also ideal for repairing scratches and peeling on zinc alloy parts of airsoft and model , where the base metal has become exposed.

For example, by dipping a cotton swab in the undiluted liquid and applying it to the exposed areas of the part, it will naturally turn black. This is overwhelmingly more cost-effective than using a bluing pen.

If you polish the surface with sandpaper before use, you can achieve a blued or case-hardened color.
Please be sure to wipe off any oil or dirt before use.
If it accidentally comes into contact with wounds or mucous membranes, rinse immediately with clean water.

Processing methods: Immersion method at room temperature, brush application, spraying, etc.
For application, dilute 1 part undiluted liquid with 5 parts water (6 times dilution). For brush application, use a slightly more concentrated mixture.

The processing technique is extremely simple.
A uniform film can be formed even on parts with complex shapes.
Since the processing temperature is room temperature, it does not damage the material.
It is odorless, non-flammable, and does not degrade even with long-term storage.
There is almost no change in dimensions before and after processing.

Blackening, rust prevention, CAROMSHOT, HWS, Hartford, G.Smith.S, Indi, Indian, BIRCHWOOD, Super Blue, Aluminum Black