Zinc Blackener 1 US Pint (473ml)

ZINC BLACKENER

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

Parts that are freshly plated with Copy Cad® or Zinc plate may be moved directly to the Zinc Blackener system, after rinsing in fresh water.

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 Surface Monkey metalsealer or Beeswax.l

SHIPPING INFORMATION

Please note that our shipping prices are a higher than it would cost to send a normal parcel via the post, the reason for this is because any product that contains chemicals must be sent and packed as per the "hazardous goods" regulations, and be transported by a carrier that is licensed to be able to transport. we are unable to send by regular post as it is now a criminal offence to send undeclared hazardous goods, for postage rates please click on the tab above.