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Tools365.net

Chemical Blacking Liquid From Zinc To Black 100ml

Chemical Blacking Liquid From Zinc To Black 100ml

Normale prijs £41.25 GBP
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Brand: Tools365.net

Unit Type: 100ml

Manufacturer Part Number: Tools365.net

Country/Region of Manufacture: United Kingdom

ZINC BLACKENER. 100ml


A room temperature blackening process for die cast and plated zinc surfaces. The very mild acidic liquid concentrate is diluted with 9 parts of water for a 10% by volume working solution. Immersion times of 2 - 5 minutes. Equally effective on cadmium surfaces. 16 fl oz.


Surface Preparation




Older zinc die castings (pot metal) should be blast cleaned with either glass beads or baking soda to remove the oxide layer. Some parts may not blacken evenly. In this situation, blast off the defective coating, then ‘etch’ the metal by immersing in a solution of 5% battery acid and distilled water for 60 seconds. Thoroughly rinse in fresh water, then repeat the blackening process.


To blacken the parts, simply immerse in the made up solution until uniformly black. Agitate the parts to remove air bubbles etc.  Rinse the parts in fresh water and allow to dry. Do not handle the parts for at least 1 hour.   Seal the surface with  metal sealer or Beeswax/wd40

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