Ferric Chloride has a wide range of uses. Its primary use in knifemaking is to etch Damascus steel (Pattern welded steel) the ferric will etch the carbon steel (most likley 1075 or 1084) and leave your 15N20 bright and shiny. With the right process, you can create a high contrast pattern that’s bold and dark.

Ferric can also be used to etch your blades to a dark grey/black finish. Other uses include; prepping a knife for a stonewashed finish, etching patterns onto the blade and so much more.

Directions for use

  1. Always wear appropriate PPE while using Ferric chloride. Although it is a mild acid it is still an acid and can cause harm. Gloves and safety glasses are a must while working with ferric.
  2. Ferric can be mixed to a range of concentrations. For general purpose etching we’ve found that a 1:4 Ferric to water ratio works best for most purposes. However, a stronger or lighter solution may be needed for your task and preference of how you like to etch your blades.
  3. Store your ferric in a safe container. One of the quickest and easiest methods for storing your ferric is to get a pvc pipe to the length you want. Glue a pipe end on one side and have a pipe end lose on the other as a lid. This pipe and then be embedded in a bucket of sand so that it can’t tip over. Ferric chloride IS an acid and does evaporate into the air so its important that you dont store indoors with metal objects. The acid will eat away and rust everything nearby. We recommend storing your ferric outdoors where at all possible.
  4. After using ferric its important to wash the knife down thoroughly, neutralise with water and bicarb and apply a protective oil (e.g WD40) as soon as it come out of the acid.


Additional information

Weight 0.5 kg
Dimensions 23 × 9 × 5 cm
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